| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2018 | |
| 4 | 2017 | |
| 5 | 2016 | |
| 6 | 2015 | |
| 7 | 2014 | 35.30 |
| 8 | 2013 | 34.75 |
| 9 | 2012 | 33.92 |
| 10 | 2011 | 32.92 |
| 11 | 2010 | 33.47 |
| 12 | 2009 | 37.04 |
| 13 | 2008 | 37.49 |
| 14 | 2007 | 36.37 |
| 15 | 2006 | 22.66 |
| 16 | 2005 | 26.80 |
| 17 | 2004 | 23.44 |
| 18 | 2003 | 23.47 |
| 19 | 2002 | 25.67 |
| 20 | 2001 | 22.54 |
| 21 | 2000 | 22.40 |
| 22 | 1999 | 24.30 |
| 23 | 1998 | 25.10 |
| 24 | 1997 | 29.70 |
| 25 | 1996 | 29.50 |
| 26 | 1995 | 31.10 |
| 27 | 1994 | 30.70 |
| 28 | 1993 | 24.60 |
| 29 | 1992 | 24.00 |
| 30 | 1991 | 23.60 |
| 31 | 1990 | 23.50 |
| 32 | 1985 | 21.40 |
| 33 | 1980 | 16.98 |
| 34 | 1978 | 16.70 |
