| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 22.77 |
| 8 | 2014 | 22.49 |
| 9 | 2013 | 22.06 |
| 10 | 2012 | 22.95 |
| 11 | 2011 | 23.95 |
| 12 | 2010 | 22.99 |
| 13 | 2009 | 23.66 |
| 14 | 2008 | 23.49 |
| 15 | 2007 | 25.04 |
| 16 | 2006 | 23.02 |
| 17 | 2005 | 18.36 |
| 18 | 2004 | 20.37 |
| 19 | 2003 | 21.62 |
| 20 | 2002 | 19.66 |
| 21 | 2001 | 21.55 |
| 22 | 2000 | 20.88 |
| 23 | 1999 | 20.42 |
| 24 | 1998 | 19.22 |
| 25 | 1993 | 18.17 |
| 26 | 1992 | 18.00 |
| 27 | 1991 | 18.62 |
| 28 | 1990 | 18.16 |
| 29 | 1989 | 17.70 |
| 30 | 1988 | 18.05 |
| 31 | 1987 | 18.00 |
