                                                     2011   7                                     
                       
           
                                        800                         40       22                                                               
     
         
            40                                                             10                      2000    28  30              
          
                        800           
                          
     
   
   
  
      150     4  10   3                   45                                                                                        
 
         
 6                                                                                                 
                                                                  
                                                             
                                                                                                                                                      