| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2018 | |
| 4 | 2017 | |
| 5 | 2016 | |
| 6 | 2015 | |
| 7 | 2014 | 29.12 |
| 8 | 2013 | 28.15 |
| 9 | 2012 | 29.57 |
| 10 | 2011 | 31.70 |
| 11 | 2010 | 27.52 |
| 12 | 2009 | 25.14 |
| 13 | 2008 | 22.08 |
| 14 | 2007 | 22.31 |
| 15 | 2006 | 23.21 |
| 16 | 2005 | 25.66 |
| 17 | 2000 | 24.51 |
| 18 | 1999 | 25.58 |
| 19 | 1998 | 24.85 |
| 20 | 1997 | 25.34 |
| 21 | 1996 | 25.32 |
| 22 | 1995 | 25.97 |
| 23 | 1994 | 30.05 |
| 24 | 1993 | 33.23 |
| 25 | 1989 | 34.58 |
| 26 | 1988 | 33.83 |
| 27 | 1987 | 32.76 |
| 28 | 1986 | 30.04 |
| 29 | 1985 | 28.81 |
