| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2010 | |
| 3 | 2009 | |
| 4 | 2008 | |
| 5 | 2007 | |
| 6 | 2006 | |
| 7 | 2005 | 21.31 |
| 8 | 2004 | 22.65 |
| 9 | 2003 | 22.00 |
| 10 | 2002 | 23.10 |
| 11 | 2001 | 21.60 |
| 12 | 2000 | 24.10 |
| 13 | 1995 | 22.50 |
| 14 | 1990 | 25.10 |
| 15 | 1982 | 28.40 |
