| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2018 | |
| 4 | 2017 | |
| 5 | 2016 | |
| 6 | 2015 | |
| 7 | 2014 | 46.66 |
| 8 | 2013 | 44.94 |
| 9 | 2012 | 44.12 |
| 10 | 2011 | 42.88 |
| 11 | 2010 | 42.90 |
| 12 | 2009 | 39.80 |
| 13 | 2008 | 38.25 |
| 14 | 2007 | 37.80 |
| 15 | 2006 | 45.58 |
| 16 | 2005 | 36.71 |
| 17 | 2004 | 39.06 |
| 18 | 2003 | 31.34 |
| 19 | 2002 | 29.65 |
| 20 | 2001 | 28.95 |
| 21 | 2000 | 27.70 |
| 22 | 1999 | 27.00 |
| 23 | 1998 | 26.80 |
| 24 | 1997 | 26.90 |
| 25 | 1996 | 25.00 |
| 26 | 1995 | 24.00 |
| 27 | 1994 | 24.90 |
| 28 | 1993 | 23.60 |
| 29 | 1992 | 21.40 |
| 30 | 1991 | 20.30 |
| 31 | 1990 | 19.30 |
| 32 | 1985 | 18.08 |
| 33 | 1980 | 12.47 |
| 34 | 1978 | 11.64 |
