| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2024 |
|
| 2 |
2023 |
|
| 3 |
2022 |
|
| 4 |
2021 |
|
| 5 |
2020 |
|
| 6 |
2019 |
|
| 7 |
2018 |
|
| 8 |
2017 |
|
| 9 |
2016 |
|
| 10 |
2015 |
|
| 11 |
2014 |
0.91 |
| 12 |
2013 |
0.78 |
| 13 |
2012 |
1.27 |
| 14 |
2011 |
1.07 |
| 15 |
2010 |
1.52 |
| 16 |
2009 |
2.06 |
| 17 |
2008 |
2.23 |
| 18 |
2007 |
2.49 |
| 19 |
2006 |
2.39 |
| 20 |
2005 |
2.67 |
| 21 |
2004 |
1.82 |
| 22 |
2003 |
2.03 |
| 23 |
2002 |
2.54 |
| 24 |
2001 |
2.99 |
| 25 |
2000 |
3.93 |
| 26 |
1999 |
5.06 |
| 27 |
1998 |
6.36 |
| 28 |
1997 |
6.85 |
| 29 |
1996 |
7.35 |
| 30 |
1995 |
7.90 |
| 31 |
1994 |
9.68 |
| 32 |
1993 |
10.38 |
| 33 |
1992 |
10.13 |
| 34 |
1991 |
10.19 |
| 35 |
1990 |
11.76 |
| 36 |
1985 |
10.28 |
| 37 |
1980 |
8.63 |
| 38 |
1978 |
12.16 |
| 39 |
1975 |
16.55 |
| 40 |
1970 |
28.99 |
| 41 |
1965 |
32.38 |
| 42 |
1962 |
26.84 |
| 43 |
1957 |
26.14 |
