| 序号 | 时间 (年) |
数据 (‰) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 14.10 |
| 8 | 2016 | 14.29 |
| 9 | 2015 | 14.77 |
| 10 | 2014 | 14.97 |
| 11 | 2013 | 14.35 |
| 12 | 2012 | 14.97 |
| 13 | 2011 | 13.67 |
| 14 | 2010 | 12.56 |
| 15 | 2009 | 9.28 |
| 16 | 2008 | 9.02 |
| 17 | 2007 | 9.19 |
| 18 | 2006 | 8.46 |
| 19 | 2005 | 8.26 |
| 20 | 2004 | 8.06 |
| 21 | 2003 | 7.83 |
| 22 | 2002 | 7.87 |
| 23 | 2001 | 8.97 |
| 24 | 2000 | 8.26 |
| 25 | 1995 | 15.96 |
| 26 | 1990 | 19.39 |
| 27 | 1985 | 12.58 |
| 28 | 1980 | 16.67 |
| 29 | 1975 | 21.30 |
| 30 | 1970 | 31.88 |
| 31 | 1965 | 31.74 |
| 32 | 1962 | 38.87 |
| 33 | 1957 | 23.20 |
| 34 | 1955 | 39.57 |
| 35 | 1952 | 19.12 |
