| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2013 | |
| 4 | 2012 | |
| 5 | 2011 | |
| 6 | 2010 | |
| 7 | 2009 | 33.20 |
| 8 | 2008 | 31.00 |
| 9 | 2005 | 30.40 |
| 10 | 2000 | 25.20 |
| 11 | 1995 | 17.40 |
| 12 | 1990 | 15.10 |
| 13 | 1985 | 12.10 |
| 14 | 1980 | 7.90 |
| 15 | 1978 | 8.20 |
