????:1???????:?????300??

2??????????

3?????gm??????

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