| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2024 |
|
| 2 |
2023 |
|
| 3 |
2022 |
|
| 4 |
2021 |
|
| 5 |
2020 |
|
| 6 |
2019 |
|
| 7 |
2018 |
231.69 |
| 8 |
2017 |
231.10 |
| 9 |
2016 |
231.15 |
| 10 |
2015 |
235.82 |
| 11 |
2014 |
237.51 |
| 12 |
2013 |
238.84 |
| 13 |
2012 |
242.26 |
| 14 |
2011 |
241.18 |
| 15 |
2010 |
244.00 |
| 16 |
2009 |
244.25 |
| 17 |
2008 |
247.29 |
| 18 |
2007 |
250.22 |
| 19 |
2006 |
250.51 |
| 20 |
2005 |
253.54 |
| 21 |
2004 |
255.54 |
| 22 |
2003 |
259.45 |
| 23 |
2002 |
258.73 |
| 24 |
2001 |
260.64 |
| 25 |
2000 |
262.85 |
| 26 |
1999 |
265.18 |
| 27 |
1998 |
266.35 |
| 28 |
1997 |
269.02 |
| 29 |
1996 |
276.56 |
| 30 |
1995 |
279.28 |
| 31 |
1994 |
282.11 |
| 32 |
1993 |
283.51 |
| 33 |
1992 |
288.59 |
| 34 |
1991 |
294.21 |
| 35 |
1990 |
299.36 |
| 36 |
1989 |
304.60 |
| 37 |
1988 |
308.92 |
| 38 |
1987 |
315.60 |
| 39 |
1986 |
318.33 |
| 40 |
1985 |
321.87 |
| 41 |
1984 |
323.50 |
| 42 |
1983 |
328.79 |
| 43 |
1982 |
329.30 |
| 44 |
1981 |
331.24 |
| 45 |
1980 |
334.66 |
| 46 |
1979 |
339.26 |
| 47 |
1978 |
344.18 |
| 48 |
1977 |
349.42 |
| 49 |
1976 |
354.23 |
| 50 |
1975 |
358.60 |
| 51 |
1974 |
359.76 |
| 52 |
1973 |
365.91 |
| 53 |
1972 |
371.77 |
| 54 |
1971 |
375.54 |
| 55 |
1970 |
379.87 |
| 56 |
1969 |
383.52 |
| 57 |
1968 |
389.28 |
| 58 |
1967 |
391.26 |
| 59 |
1966 |
393.60 |
| 60 |
1965 |
396.88 |
| 61 |
1964 |
400.51 |
| 62 |
1963 |
404.25 |
| 63 |
1962 |
403.37 |
| 64 |
1961 |
408.72 |
| 65 |
1960 |
413.04 |
