                              1907                                          
   7  1918                         1920                2349        12  1923    5                                                     1930                 4      房里      9000        4830     
1930        18.9     1933         35           40       
1945  1949   37             76.9      
1952                 31.7       1960                 15.4              1960       124     1965                                           110.2     
        
         1905                                         
      1907                                  
       1923                                    5                                                      
                        
1924 1932            
1.   
   13  1924    5                                       251      10400                                                                                  
                         4                   1924                                                      
                                       1926                                                                                                                                                                 
    
   15  1926                                                                                                22     36      8586              2046               
                                                             
    
  16  1927   11                                                                            
                      
                                                 
                                                                            
    
  17  1928                                                                                                           
                         
                                    
                                                                   
                           5                                                    
                 240  1  15  ×16 ＝240   100  1    
                                
                        

      15 %       1927         6       4        4                        
                                                                     
            2         3   30                3                         1927                       3.6    5.4           1.6         1      
      2   1933                                                                                                    