| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2018 | |
| 4 | 2017 | |
| 5 | 2015 | |
| 6 | 2013 | |
| 7 | 2010 | |
| 8 | 2009 | |
| 9 | 2008 | |
| 10 | 2007 | |
| 11 | 2006 | 99.37 |
| 12 | 2005 | 99.20 |
| 13 | 2004 | 99.05 |
| 14 | 2003 | 98.59 |
| 15 | 2002 | 98.49 |
| 16 | 2001 | 98.43 |
| 17 | 2000 | 99.38 |
| 18 | 1999 | 99.38 |
| 19 | 1998 | 99.30 |
| 20 | 1997 | 99.25 |
| 21 | 1996 | 99.24 |
| 22 | 1995 | 98.97 |
| 23 | 1994 | 98.72 |
| 24 | 1993 | 98.39 |
| 25 | 1992 | 98.14 |
| 26 | 1991 | 98.08 |
| 27 | 1990 | 98.05 |
| 28 | 1989 | 98.09 |
| 29 | 1988 | 97.99 |
| 30 | 1987 | 98.02 |
| 31 | 1986 | 97.69 |
| 32 | 1985 | 97.05 |
| 33 | 1984 | 96.75 |
| 34 | 1980 | 95.91 |
| 35 | 1978 | 95.66 |
| 36 | 1975 | 98.03 |
| 37 | 1965 | 83.45 |
| 38 | 1962 | 67.52 |
| 39 | 1957 | 52.89 |
