?? ?????????80????? ????????
????:1????????:??????
2??????????
3???????????
4???????????
5??????????
?12?????????????????22????? (?????? ??)22????,?????,??80?,??1997??
????????????????????????,??19????????????????????90???????,1?????11?????73.9?????????,?35%,?2019??59%?
?????????????????,????????????,??12??20???,?45.6???????????????,??57.2%,??22%?
??????????12?17?????,???9300?,??????????30%?????,?250????????11???????????????????,?????????????8.3??,??196%?
??????????????????????????,????????????7??,??????(???????????????) ???:?????????