| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2024 |
|
| 2 |
2023 |
|
| 3 |
2022 |
|
| 4 |
2021 |
|
| 5 |
2020 |
|
| 6 |
2019 |
|
| 7 |
2018 |
5.40 |
| 8 |
2017 |
6.91 |
| 9 |
2016 |
6.56 |
| 10 |
2015 |
4.14 |
| 11 |
2014 |
5.20 |
| 12 |
2013 |
4.21 |
| 13 |
2012 |
3.41 |
| 14 |
2011 |
3.69 |
| 15 |
2010 |
1.22 |
| 16 |
2009 |
2.18 |
| 17 |
2008 |
2.51 |
| 18 |
2007 |
2.84 |
| 19 |
2006 |
2.18 |
| 20 |
2005 |
2.34 |
| 21 |
2004 |
2.29 |
| 22 |
2003 |
0.08 |
| 23 |
2002 |
1.64 |
| 24 |
2000 |
2.48 |
| 25 |
1999 |
2.01 |
| 26 |
1998 |
1.00 |
| 27 |
1997 |
2.16 |
| 28 |
1996 |
2.63 |
| 29 |
1995 |
2.62 |
| 30 |
1990 |
9.18 |
| 31 |
1985 |
4.56 |
| 32 |
1980 |
8.08 |
| 33 |
1978 |
8.84 |
| 34 |
1975 |
9.53 |
| 35 |
1970 |
20.76 |
| 36 |
1965 |
25.58 |
| 37 |
1962 |
28.60 |
| 38 |
1960 |
0.23 |
| 39 |
1957 |
33.15 |
| 40 |
1955 |
19.94 |
| 41 |
1952 |
19.83 |
| 42 |
1950 |
15.64 |
| 43 |
1949 |
13.09 |
