| 序号 |
时间(年) |
数据(单位：‰) |
| 1 |
2024 |
|
| 2 |
2023 |
|
| 3 |
2022 |
|
| 4 |
2021 |
|
| 5 |
2020 |
|
| 6 |
2019 |
|
| 7 |
2018 |
338.27 |
| 8 |
2017 |
345.96 |
| 9 |
2016 |
359.05 |
| 10 |
2015 |
360.02 |
| 11 |
2014 |
368.95 |
| 12 |
2013 |
384.24 |
| 13 |
2012 |
396.93 |
| 14 |
2011 |
405.14 |
| 15 |
2010 |
419.24 |
| 16 |
2009 |
423.45 |
| 17 |
2008 |
424.69 |
| 18 |
2007 |
426.12 |
| 19 |
2006 |
436.25 |
| 20 |
2005 |
453.29 |
| 21 |
2004 |
476.88 |
| 22 |
2003 |
498.95 |
| 23 |
2002 |
514.48 |
| 24 |
2001 |
523.24 |
| 25 |
2000 |
531.87 |
| 26 |
1999 |
539.30 |
| 27 |
1998 |
546.96 |
| 28 |
1997 |
543.12 |
| 29 |
1996 |
549.63 |
| 30 |
1995 |
545.72 |
| 31 |
1994 |
548.45 |
| 32 |
1993 |
541.67 |
| 33 |
1992 |
534.56 |
| 34 |
1991 |
530.25 |
| 35 |
1990 |
518.80 |
| 36 |
1989 |
517.34 |
| 37 |
1988 |
506.94 |
| 38 |
1987 |
505.91 |
| 39 |
1986 |
561.27 |
| 40 |
1985 |
553.97 |
| 41 |
1984 |
583.85 |
| 42 |
1983 |
578.95 |
| 43 |
1982 |
577.04 |
| 44 |
1981 |
545.22 |
| 45 |
1980 |
546.55 |
| 46 |
1979 |
486.86 |
| 47 |
1978 |
486.27 |
| 48 |
1977 |
465.74 |
| 49 |
1976 |
462.78 |
| 50 |
1975 |
460.15 |
| 51 |
1974 |
472.49 |
| 52 |
1973 |
456.67 |
| 53 |
1972 |
472.31 |
| 54 |
1971 |
474.11 |
| 55 |
1970 |
401.02 |
| 56 |
1969 |
400.30 |
| 57 |
1968 |
402.81 |
| 58 |
1967 |
403.38 |
| 59 |
1966 |
413.62 |
| 60 |
1965 |
409.95 |
| 61 |
1964 |
410.12 |
| 62 |
1963 |
415.48 |
| 63 |
1962 |
422.43 |
| 64 |
1961 |
434.92 |
| 65 |
1960 |
450.82 |
