| 序号 | 时间 (年) |
数据 (-) |
|---|---|---|
| 1 | 2022 | |
| 2 | 2021 | |
| 3 | 2020 | |
| 4 | 2019 | |
| 5 | 2018 | |
| 6 | 2017 | |
| 7 | 2016 | 14.52 |
| 8 | 2015 | 14.58 |
| 9 | 2014 | 17.09 |
| 10 | 2013 | 21.41 |
| 11 | 2012 | 22.50 |
| 12 | 2011 | 21.95 |
| 13 | 2010 | 17.96 |
| 14 | 2009 | 17.95 |
| 15 | 2008 | 19.30 |
| 16 | 2007 | 19.51 |
| 17 | 2006 | 20.36 |
| 18 | 2005 | 20.86 |
| 19 | 2004 | 20.83 |
| 20 | 2000 | 18.84 |
| 21 | 1995 | 16.30 |
| 22 | 1990 | 8.69 |
| 23 | 1985 | 8.12 |
| 24 | 1980 | 2.29 |
| 25 | 1975 | 5.95 |
| 26 | 1970 | 1.36 |
| 27 | 1965 | 9.51 |
| 28 | 1962 | 6.64 |
| 29 | 1957 | 11.84 |
| 30 | 1952 | 22.33 |
