| 序号 | 时间 (年) |
数据 (-) |
|---|---|---|
| 1 | 2022 | |
| 2 | 2021 | |
| 3 | 2020 | |
| 4 | 2019 | |
| 5 | 2018 | |
| 6 | 2017 | |
| 7 | 2016 | 15.36 |
| 8 | 2015 | 17.37 |
| 9 | 2014 | 17.48 |
| 10 | 2013 | 18.17 |
| 11 | 2012 | 17.49 |
| 12 | 2011 | 17.14 |
| 13 | 2010 | 17.40 |
| 14 | 2009 | 17.20 |
| 15 | 2008 | 17.29 |
| 16 | 2007 | 16.42 |
| 17 | 2006 | 16.88 |
| 18 | 2005 | 16.72 |
| 19 | 2004 | 16.98 |
| 20 | 2000 | 15.24 |
| 21 | 1995 | 15.60 |
| 22 | 1990 | 14.20 |
| 23 | 1985 | 16.75 |
| 24 | 1980 | 16.84 |
| 25 | 1978 | 21.28 |
| 26 | 1975 | 21.28 |
| 27 | 1970 | 24.67 |
| 28 | 1965 | 23.27 |
| 29 | 1962 | 25.41 |
| 30 | 1957 | 23.75 |
| 31 | 1952 | 31.41 |
