| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 0.99 |
| 8 | 2014 | 1.30 |
| 9 | 2013 | 1.08 |
| 10 | 2012 | 1.18 |
| 11 | 2011 | 1.82 |
| 12 | 2010 | 1.95 |
| 13 | 2009 | 2.09 |
| 14 | 2008 | 2.34 |
| 15 | 2007 | 2.57 |
| 16 | 2006 | 1.90 |
| 17 | 2005 | 1.99 |
| 18 | 2004 | 2.43 |
| 19 | 1977 | 2.01 |
| 20 | 1976 | 2.05 |
| 21 | 1975 | 1.72 |
| 22 | 1974 | 1.61 |
| 23 | 1973 | 1.87 |
| 24 | 1970 | 1.63 |
