| | — | | | | | | | | | | | | | | | 37 | | | | | | | | | | | | | | | | 20 | 59 30 | | | | | | | | | | 1999 | 20 | | | | 2000 | | | | | | | | | | | 5 - 10 | | | | | | | 1992 | | | | | | | | | | | | | | | | | | | | | | | | | — — | 3 | + | + | + | | | | | | | | | | | | 36.8 | 58.2 31. | 6% 57.3% ； 1.6 | 5 2000 | 7000 ； | 13 21 2021 5 | | | | | | |