| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 26.98 |
| 8 | 2014 | 26.37 |
| 9 | 2013 | 26.02 |
| 10 | 2012 | 26.15 |
| 11 | 2011 | 27.06 |
| 12 | 2010 | 26.81 |
| 13 | 2009 | 27.75 |
| 14 | 2008 | 28.44 |
| 15 | 2007 | 29.21 |
| 16 | 2006 | 32.73 |
| 17 | 2005 | 33.84 |
| 18 | 2004 | 33.97 |
| 19 | 2003 | 37.84 |
| 20 | 2002 | 36.68 |
| 21 | 2001 | 37.50 |
| 22 | 2000 | 37.37 |
| 23 | 1999 | 37.66 |
| 24 | 1998 | 37.51 |
| 25 | 1997 | 37.16 |
| 26 | 1996 | 37.83 |
| 27 | 1995 | 37.99 |
| 28 | 1994 | 38.66 |
| 29 | 1993 | 39.83 |
| 30 | 1992 | 40.21 |
| 31 | 1991 | 39.97 |
| 32 | 1990 | 1.20 |
| 33 | 1989 | 1.44 |
| 34 | 1987 | 0.79 |
| 35 | 1986 | 0.95 |
