             

                                                                                                  ᠂                                 1953                                              
                                                                                                                                                             
               
                                                 
1             
                 
 ᠄ 1953  1955                                                                       1953   689  ᠪᠠ    1954  5151    1955   5654               40%      4 
   1956  1957            
1955  1956                                    
1956   2                                                                      
                                 1957                                     1955            20   1956      543   1957    632      5 
   1956                                   1958  7         2292            80%            6 
 2            
                          ᠂                                                          1%-3%        