| 年度 | 数值 | 单位 | 发布日期 |
| 2007 | 25900 | 千头 | 2026-9 |
| 2006 | 25270 | 千头 | 2026-9 |
| 2005 | 24640 | 千头 | 2026-9 |
| 2004 | 22750 | 千头 | 2026-9 |
| 2003 | 23100 | 千头 | 2026-9 |
| 2002 | 21500 | 千头 | 2026-9 |
| 2001 | 21000 | 千头 | 2026-9 |
| 2000 | 20850 | 千头 | 2026-9 |
| 1999 | 19625 | 千头 | 2026-9 |
| 1998 | 18713 | 千头 | 2026-9 |
| 1997 | 18360 | 千头 | 2026-9 |
| 1996 | 17850 | 千头 | 2026-9 |
| 1995 | 16100 | 千头 | 2026-9 |
| 1994 | 14861 | 千头 | 2026-9 |
| 1993 | 14570 | 千头 | 2026-9 |
| 1992 | 14574 | 千头 | 2026-9 |
| 1991 | 14076 | 千头 | 2026-9 |
| 1990 | 13800 | 千头 | 2026-9 |
| 1989 | 12855 | 千头 | 2026-9 |
| 1988 | 11595 | 千头 | 2026-9 |
| 1987 | 10638 | 千头 | 2026-9 |
| 1986 | 10500 | 千头 | 2026-9 |
| 1985 | 10800 | 千头 | 2026-9 |
| 1984 | 11000 | 千头 | 2026-9 |
| 1983 | 11023 | 千头 | 2026-9 |
| 1982 | 10159 | 千头 | 2026-9 |
| 1981 | 11137 | 千头 | 2026-9 |
| 1980 | 13350 | 千头 | 2026-9 |
| 1979 | 12259 | 千头 | 2026-9 |
| 1978 | 10600 | 千头 | 2026-9 |
| 1977 | 10040 | 千头 | 2026-9 |
| 1976 | 9801 | 千头 | 2026-9 |
| 1975 | 10271 | 千头 | 2026-9 |
| 1974 | 9857 | 千头 | 2026-9 |
| 1973 | 12876 | 千头 | 2026-9 |
| 1972 | 11559 | 千头 | 2026-9 |
| 1971 | 10527 | 千头 | 2026-9 |
| 1970 | 9638 | 千头 | 2026-9 |
| 1969 | 9480 | 千头 | 2026-9 |
| 1968 | 0 | 千头 | 2026-9 |
| 1967 | 0 | 千头 | 2026-9 |
| 1966 | 0 | 千头 | 2026-9 |
| 1965 | 0 | 千头 | 2026-9 |
| 1964 | 0 | 千头 | 2026-9 |
| 1963 | 0 | 千头 | 2026-9 |
| 1962 | 0 | 千头 | 2026-9 |
| 1961 | 0 | 千头 | 2026-9 |
| 1960 | 0 | 千头 | 2026-9 |