| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | |
| 8 | 2014 | |
| 9 | 2013 | |
| 10 | 2012 | |
| 11 | 2011 | 49.91 |
| 12 | 2010 | 48.63 |
| 13 | 2009 | 49.20 |
| 14 | 2008 | 48.45 |
| 15 | 2007 | 48.44 |
| 16 | 2006 | 48.26 |
| 17 | 2005 | 49.05 |
| 18 | 2004 | 48.58 |
| 19 | 2003 | 48.13 |
| 20 | 2002 | 47.64 |
| 21 | 2001 | 46.97 |
| 22 | 2000 | 46.35 |
| 23 | 1999 | 45.79 |
| 24 | 1998 | 45.35 |
| 25 | 1997 | 44.87 |
| 26 | 1996 | 44.45 |
| 27 | 1995 | 44.17 |
| 28 | 1994 | 43.77 |
| 29 | 1993 | 43.44 |
| 30 | 1992 | 43.10 |
| 31 | 1991 | 42.90 |
| 32 | 1989 | 39.06 |
| 33 | 1982 | 30.00 |
| 34 | 1981 | 29.52 |
| 35 | 1980 | 29.11 |
| 36 | 1979 | 28.92 |
| 37 | 1978 | 28.87 |
| 38 | 1977 | 28.72 |
| 39 | 1976 | 28.71 |
| 40 | 1975 | 28.81 |
