| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2024 |
|
| 2 |
2023 |
|
| 3 |
2022 |
|
| 4 |
2021 |
|
| 5 |
2020 |
|
| 6 |
2019 |
|
| 7 |
2018 |
18.50 |
| 8 |
2017 |
18.90 |
| 9 |
2016 |
19.30 |
| 10 |
2015 |
19.70 |
| 11 |
2014 |
20.10 |
| 12 |
2013 |
20.50 |
| 13 |
2012 |
21.00 |
| 14 |
2011 |
21.50 |
| 15 |
2010 |
22.00 |
| 16 |
2009 |
22.50 |
| 17 |
2008 |
23.10 |
| 18 |
2007 |
23.70 |
| 19 |
2006 |
24.20 |
| 20 |
2005 |
24.70 |
| 21 |
2004 |
25.10 |
| 22 |
2003 |
25.60 |
| 23 |
2002 |
26.00 |
| 24 |
2001 |
26.60 |
| 25 |
2000 |
27.10 |
| 26 |
1999 |
27.90 |
| 27 |
1998 |
28.20 |
| 28 |
1997 |
28.90 |
| 29 |
1996 |
29.70 |
| 30 |
1995 |
30.50 |
| 31 |
1994 |
31.40 |
| 32 |
1993 |
32.30 |
| 33 |
1992 |
33.20 |
| 34 |
1991 |
34.20 |
| 35 |
1990 |
35.10 |
| 36 |
1989 |
36.20 |
| 37 |
1988 |
37.20 |
| 38 |
1987 |
38.10 |
| 39 |
1986 |
40.20 |
| 40 |
1985 |
40.90 |
| 41 |
1984 |
41.60 |
| 42 |
1983 |
42.20 |
| 43 |
1982 |
41.40 |
| 44 |
1981 |
42.20 |
| 45 |
1980 |
43.10 |
| 46 |
1979 |
44.00 |
| 47 |
1978 |
44.80 |
| 48 |
1977 |
45.50 |
