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

????:????:????????

???????6??21?????????????? (????? ?????????)21?,??????????????????????,????,????

??????????,????????????????,21??,???????28??????,??????????21????14??15????????,???????,???????20.3??21??,?????????????

??????1991???????2020??,?,?,??????????????27.4??

?????????,??????,?????????????,?????????,??,??

??,22????????23??????,????????,???7?8??????????,??????,??????????,????????????????,??????????(???????????????) ???????:???????????