| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2024 |
|
| 2 |
2023 |
|
| 3 |
2022 |
|
| 4 |
2021 |
|
| 5 |
2020 |
|
| 6 |
2019 |
|
| 7 |
2018 |
7.78 |
| 8 |
2017 |
8.69 |
| 9 |
2016 |
8.97 |
| 10 |
2015 |
8.04 |
| 11 |
2014 |
8.57 |
| 12 |
2013 |
8.62 |
| 13 |
2012 |
8.93 |
| 14 |
2011 |
8.97 |
| 15 |
2010 |
9.04 |
| 16 |
2009 |
9.68 |
| 17 |
2008 |
9.69 |
| 18 |
2007 |
9.76 |
| 19 |
2006 |
10.69 |
| 20 |
2005 |
10.98 |
| 21 |
2004 |
11.18 |
| 22 |
2003 |
10.95 |
| 23 |
2002 |
11.56 |
| 24 |
2001 |
11.71 |
| 25 |
2000 |
11.92 |
| 26 |
1999 |
12.32 |
| 27 |
1998 |
13.08 |
| 28 |
1997 |
13.47 |
| 29 |
1996 |
13.78 |
| 30 |
1995 |
13.79 |
| 31 |
1990 |
18.82 |
| 32 |
1985 |
13.30 |
| 33 |
1980 |
20.24 |
| 34 |
1978 |
23.02 |
| 35 |
1975 |
28.73 |
| 36 |
1970 |
33.94 |
| 37 |
1965 |
38.79 |
| 38 |
1960 |
2.68 |
| 39 |
1958 |
24.34 |
| 40 |
1953 |
20.63 |
| 41 |
1950 |
19.74 |
