???????? 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? |
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