 

      27  1957 .         ,       . 

 14             .         .        .      , ,    . 

 1978 ,   ,         ,     .          .  1985  2012     .. 

 1998        :      ,  .     . 

       .     -   :  ,    ( 1982),    (1984),    (1986),     (1987),   (1990),    (1994),   (1997),  (2003),  (2005),  (2007)  .  2007       . 

               .

              .