?? ???? ?????? ???????? ??? ??????? ?? ????? ??????? ????? ?? ??????? ??? ??? ??????? ????????? ??? ??????? ??????? ????? ??? ????? ?????. ??? ?????? ?? ??? ???? 1952 ?2000? ??? ???? ?????? ??????? ???????? ??????? 5?11٪ ??? ??????? ??????ɡ ????? ???? ??????? ??????? 6 ?11٪ ?? ?????? ?? ??? ???? 1979 ?2000. ??? ??? 2001? ??? ???? ???? ???? ???????? ???????? ????????? ??? ???????? ??????? ????? 4?13418 ????? ???? ?? ?????? ???? ????? ?????? ??????? ???????? 7?4260 ????? ???? ?????? 9?8٪ ?? ????? ??????.

??? ???? ?? ????? ??? ?? ?????? ????? ??? ???????? ???????? ???????? ??????? ????? ??????? ??? ???? ??? ????? ????? ???? ?? ??????. ???? ??? 1996? ???? ??? ??????? ??? ?? ??????? ?????? ???????? ???????? ????????? ???????? ???????????? ?????? ????? ?? ??????.

?? ??? 1978? ??? ?? ????? ?????? ??????? ?????? ??? ?? ????? ???????? ???????? 6?77٪ ????????? ???????? 4?22٪. ??? ??? ??????? ????????? ?????? ????? ??????? ???????? ?????? ?????????? ???????ɡ ???? ???????? ??? ????????? ??????? ????????? ??????????? ????? ??????? ?? ???? ???? ?????? ??????? ????????? ??????? ??????? ?????? ?? ????? ?????????? ?????? ??? ??? ?????? ??????? ??? ??? ??????. ??? ??? 2000? ???? ???? ??????? ??????? ???????? ???????? ????????? ??????? ???????? ?? ????? ???????? ???????? ???????? ???? ???????? ??????? ????? 3?48٪? ????? ?????? ??????? ???????? 2?59٪ ???? ???????? ???? 5?55٪ ????? ??????? 1?56٪. ????? ??????? ??????? ???????? ???????? ???????? ??????? ?? ????? ???????? ???????? ???????? ???? ???????? ??????? ????? 2?15٪ ??????? ??????? ???????? 9?13٪ ???? ???????? ???? 6?16٪. ????? ?????? ??? ??????? ??????? ???????? ??? ??????????? ???????ɡ ????????? ??? ????????? ???? ??????? ?? ???? ???? ?????? ???????1?27٪ ??????? ??????? ???????? 5?22٪ ???? ???????? ???? 7?14٪. ??? ???? ???? ??????? ??????? ???????? ??????? ??????? ???? 4?9٪ ???? ???????? ???? 2?13٪.