              
       1840      1949         4.1    5.4     109       1.3    
                                                               
       1957        6.47             1959   1961   3             1500                 
       1962   1972   11      8.6         
       1973   1984                                  1973   8.9   1984    10.03    
       1989  4        11    1995  2   15  12   