| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | |
| 8 | 2014 | |
| 9 | 2013 | |
| 10 | 2012 | |
| 11 | 2011 | 30.52 |
| 12 | 2010 | 32.15 |
| 13 | 2009 | 32.68 |
| 14 | 2008 | 33.76 |
| 15 | 2007 | 36.19 |
| 16 | 2006 | 35.26 |
| 17 | 2005 | 34.90 |
| 18 | 2004 | 36.77 |
| 19 | 2003 | 33.49 |
| 20 | 2001 | 34.88 |
| 21 | 2000 | 29.04 |
| 22 | 1999 | 24.50 |
| 23 | 1998 | 20.80 |
| 24 | 1995 | 17.10 |
| 25 | 1994 | 19.10 |
| 26 | 1991 | 21.80 |
| 27 | 1990 | 17.60 |
