| 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 |
270.78 |
| 12 |
2013 |
277.90 |
| 13 |
2012 |
284.73 |
| 14 |
2011 |
291.78 |
| 15 |
2010 |
298.06 |
| 16 |
2009 |
304.65 |
| 17 |
2008 |
306.78 |
| 18 |
2007 |
309.46 |
| 19 |
2006 |
310.09 |
| 20 |
2005 |
313.62 |
| 21 |
2004 |
315.53 |
| 22 |
2003 |
314.26 |
| 23 |
2002 |
314.02 |
| 24 |
2001 |
319.23 |
| 25 |
2000 |
308.19 |
| 26 |
1999 |
306.33 |
| 27 |
1998 |
301.86 |
| 28 |
1997 |
295.38 |
| 29 |
1996 |
282.13 |
| 30 |
1995 |
260.12 |
| 31 |
1994 |
260.09 |
| 32 |
1993 |
263.54 |
| 33 |
1992 |
274.36 |
| 34 |
1991 |
268.83 |
| 35 |
1990 |
266.18 |
| 36 |
1989 |
264.62 |
| 37 |
1988 |
261.26 |
| 38 |
1987 |
259.39 |
| 39 |
1986 |
257.22 |
| 40 |
1985 |
255.55 |
| 41 |
1984 |
252.93 |
| 42 |
1983 |
250.84 |
| 43 |
1982 |
252.66 |
| 44 |
1981 |
255.04 |
| 45 |
1980 |
255.96 |
| 46 |
1979 |
257.09 |
| 47 |
1978 |
258.74 |
| 48 |
1977 |
261.67 |
| 49 |
1976 |
264.14 |
| 50 |
1975 |
266.80 |
| 51 |
1974 |
268.46 |
| 52 |
1973 |
269.68 |
| 53 |
1972 |
272.87 |
| 54 |
1971 |
275.95 |
| 55 |
1970 |
278.93 |
| 56 |
1969 |
280.81 |
| 57 |
1968 |
282.97 |
| 58 |
1967 |
282.84 |
| 59 |
1966 |
301.93 |
| 60 |
1965 |
307.86 |
| 61 |
1964 |
310.68 |
| 62 |
1963 |
311.66 |
| 63 |
1962 |
311.63 |
| 64 |
1961 |
309.70 |
| 65 |
1960 |
313.78 |
