| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2025 |
|
| 2 |
2024 |
|
| 3 |
2023 |
|
| 4 |
2022 |
|
| 5 |
2021 |
|
| 6 |
2020 |
|
| 7 |
2019 |
|
| 8 |
2018 |
|
| 9 |
2017 |
|
| 10 |
2016 |
|
| 11 |
2015 |
4.91 |
| 12 |
2014 |
4.90 |
| 13 |
2013 |
4.93 |
| 14 |
2012 |
4.88 |
| 15 |
2011 |
4.38 |
| 16 |
2010 |
4.34 |
| 17 |
2009 |
3.48 |
| 18 |
2008 |
2.71 |
| 19 |
2007 |
3.23 |
| 20 |
2006 |
3.13 |
| 21 |
2005 |
3.05 |
| 22 |
2004 |
2.40 |
| 23 |
2003 |
2.32 |
| 24 |
2002 |
2.21 |
| 25 |
2001 |
2.44 |
| 26 |
2000 |
3.70 |
| 27 |
1999 |
5.20 |
| 28 |
1998 |
5.88 |
| 29 |
1997 |
8.12 |
| 30 |
1996 |
9.15 |
| 31 |
1995 |
9.27 |
| 32 |
1994 |
11.49 |
| 33 |
1993 |
13.11 |
| 34 |
1992 |
12.18 |
| 35 |
1991 |
13.34 |
| 36 |
1990 |
14.30 |
| 37 |
1989 |
14.15 |
| 38 |
1988 |
12.64 |
| 39 |
1987 |
14.30 |
| 40 |
1986 |
13.27 |
| 41 |
1985 |
12.33 |
| 42 |
1980 |
13.36 |
| 43 |
1975 |
12.86 |
| 44 |
1965 |
25.06 |
