| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | |
| 8 | 2014 | |
| 9 | 2013 | |
| 10 | 2012 | |
| 11 | 2011 | 6.01 |
| 12 | 2010 | 5.97 |
| 13 | 2009 | 5.62 |
| 14 | 2005 | 5.45 |
| 15 | 2000 | 5.13 |
| 16 | 1995 | 5.64 |
| 17 | 1990 | 5.50 |
| 18 | 1985 | 5.40 |
| 19 | 1978 | 5.50 |
| 20 | 1975 | 6.60 |
| 21 | 1970 | 5.20 |
| 22 | 1965 | 12.90 |
| 23 | 1962 | 11.00 |
| 24 | 1957 | 8.90 |
| 25 | 1952 | 12.20 |
