| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 35.43 |
| 8 | 2014 | 34.72 |
| 9 | 2013 | 31.83 |
| 10 | 2012 | 28.65 |
| 11 | 2011 | 27.71 |
| 12 | 2010 | 26.44 |
| 13 | 2009 | 26.79 |
| 14 | 2008 | 27.23 |
| 15 | 2007 | 28.20 |
| 16 | 2006 | 29.36 |
| 17 | 2005 | 29.46 |
| 18 | 2004 | 29.88 |
| 19 | 2003 | 31.42 |
| 20 | 2002 | 32.76 |
| 21 | 2001 | 32.02 |
| 22 | 2000 | 32.92 |
| 23 | 1999 | 33.70 |
| 24 | 1998 | 34.91 |
| 25 | 1997 | 36.19 |
| 26 | 1996 | 36.95 |
| 27 | 1995 | 35.04 |
| 28 | 1994 | 33.29 |
| 29 | 1993 | 32.83 |
| 30 | 1992 | 34.44 |
| 31 | 1991 | 41.03 |
| 32 | 1990 | 42.94 |
| 33 | 1989 | 42.18 |
| 34 | 1985 | 46.16 |
| 35 | 1980 | 48.38 |
| 36 | 1978 | 46.20 |
