| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 27.63 |
| 8 | 2014 | 27.02 |
| 9 | 2013 | 24.66 |
| 10 | 2012 | 22.17 |
| 11 | 2011 | 21.35 |
| 12 | 2010 | 19.97 |
| 13 | 2009 | 19.60 |
| 14 | 2008 | 19.84 |
| 15 | 2007 | 20.20 |
| 16 | 2006 | 20.88 |
| 17 | 2005 | 20.70 |
| 18 | 2004 | 20.64 |
| 19 | 2003 | 19.84 |
| 20 | 2002 | 18.57 |
| 21 | 2001 | 17.49 |
| 22 | 2000 | 17.27 |
| 23 | 1999 | 16.45 |
| 24 | 1998 | 15.87 |
| 25 | 1997 | 15.38 |
| 26 | 1996 | 15.07 |
| 27 | 1995 | 15.06 |
| 28 | 1994 | 14.02 |
| 29 | 1993 | 13.83 |
| 30 | 1992 | 12.90 |
| 31 | 1991 | 14.57 |
| 32 | 1990 | 14.47 |
| 33 | 1989 | 12.95 |
| 34 | 1985 | 12.41 |
| 35 | 1980 | 15.51 |
| 36 | 1978 | 15.66 |
