| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2015 | |
| 3 | 2014 | |
| 4 | 2013 | |
| 5 | 2012 | |
| 6 | 2011 | |
| 7 | 2010 | |
| 8 | 2009 | |
| 9 | 2008 | |
| 10 | 2007 | |
| 11 | 2006 | 7.49 |
| 12 | 2005 | 8.16 |
| 13 | 2004 | 8.34 |
| 14 | 2003 | 9.33 |
| 15 | 1981 | 28.64 |
| 16 | 1980 | 21.40 |
| 17 | 1979 | 25.36 |
| 18 | 1978 | 26.30 |
| 19 | 1977 | 26.35 |
| 20 | 1976 | 25.51 |
| 21 | 1975 | 24.76 |
| 22 | 1974 | 28.21 |
| 23 | 1973 | 28.44 |
| 24 | 1972 | 30.16 |
