| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 28.10 |
| 8 | 2014 | 27.96 |
| 9 | 2013 | 27.82 |
| 10 | 2012 | 27.68 |
| 11 | 2011 | 27.54 |
| 12 | 2010 | 27.39 |
| 13 | 2009 | 27.27 |
| 14 | 2008 | 27.15 |
| 15 | 2007 | 27.03 |
| 16 | 2006 | 26.91 |
| 17 | 2005 | 26.79 |
| 18 | 2004 | 26.67 |
| 19 | 2003 | 26.54 |
| 20 | 2002 | 26.42 |
| 21 | 2001 | 26.30 |
| 22 | 2000 | 26.18 |
| 23 | 1999 | 26.13 |
| 24 | 1998 | 26.08 |
| 25 | 1997 | 26.04 |
| 26 | 1996 | 25.99 |
| 27 | 1995 | 25.94 |
| 28 | 1994 | 25.89 |
| 29 | 1993 | 25.85 |
| 30 | 1992 | 25.80 |
| 31 | 1991 | 25.75 |
| 32 | 1990 | 25.71 |
