??????? ??? ??

????? ???????? 28～29? ??? ??? ?? ??? ??? ???.

???????? 1980? ????? ??? 2000?? ???? ??? ????? ????. ? ??? 19% ??? ??? ????, ?? ?? ??? ?? ????? ??? 42%? ???? ??. ?? 100?5000??? ???? 25?2000??? ???? ??.

???? ? ?????? ????? 36%?? ?????? 566?5000?, ?????? 4500???.

???(28~8? 1?) ??? ?? ?? ? ??????????????????????/????????? ? ????(??)???????170?? 4500?500?28～29?3??/50%????(???) 15?3000?, ???(?????) 6?8000?,??, ???? ? 1?7000?