| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2019 | |
| 2 | 2014 | |
| 3 | 2013 | |
| 4 | 2012 | |
| 5 | 2011 | |
| 6 | 2010 | |
| 7 | 2009 | 0.20 |
| 8 | 2008 | 0.30 |
| 9 | 2007 | 0.50 |
| 10 | 2006 | 0.90 |
| 11 | 2004 | 1.20 |
| 12 | 2002 | 1.80 |
| 13 | 2000 | 4.00 |
| 14 | 1999 | 4.00 |
| 15 | 1998 | 2.20 |
| 16 | 1996 | 3.10 |
| 17 | 1994 | 4.50 |
| 18 | 1992 | 9.00 |
| 19 | 1990 | 12.30 |
| 20 | 1988 | 18.00 |
| 21 | 1981 | 22.70 |
