?? ????? ????? ??????? ??????? ??? ?????? ??????? ??? 1979? ????? ??? ????? ???? ???????? ??????? ?? ???? 1999? ??? ?? ????? ???????? ???????? ?????? ??????? ??????? ???? 1999 ?2000 ?2001. ????? ????? ???? ?? ?????? ?????? ?? ?????????? ?????? ??????????? ?????. ??? ??????? ????? ?????? ???????? ??? ??? 1976? ????? ????? ???? ???? ???? ??? ???? ??? ??? 1973. ??? ??????? ???????? ??????? ??????? ????? ??????? ??? ??? ???????. ???? ????? ???? ???? ??? ??????? ??????? ??????? ??? ???? ??? ??? 1984? ,???? ???? ???? ??? ??????? ????? ??????? ??? ????? ???????.