????: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??,???????????????(??) ??:?????????