| 年度 | 数值 | 单位 | 发布日期 |
| 2009 | 470 | 千头 | 2026-9 |
| 2008 | 465 | 千头 | 2026-9 |
| 2007 | 460 | 千头 | 2026-9 |
| 2006 | 458 | 千头 | 2026-9 |
| 2005 | 425 | 千头 | 2026-9 |
| 2004 | 548 | 千头 | 2026-9 |
| 2003 | 679 | 千头 | 2026-9 |
| 2002 | 582 | 千头 | 2026-9 |
| 2001 | 690 | 千头 | 2026-9 |
| 2000 | 762 | 千头 | 2026-9 |
| 1999 | 858 | 千头 | 2026-9 |
| 1998 | 591 | 千头 | 2026-9 |
| 1997 | 1908 | 千头 | 2026-9 |
| 1996 | 836 | 千头 | 2026-9 |
| 1995 | 572 | 千头 | 2026-9 |
| 1994 | 848 | 千头 | 2026-9 |
| 1993 | 722 | 千头 | 2026-9 |
| 1992 | 585 | 千头 | 2026-9 |
| 1991 | 868 | 千头 | 2026-9 |
| 1990 | 620 | 千头 | 2026-9 |
| 1989 | 319 | 千头 | 2026-9 |
| 1988 | 480 | 千头 | 2026-9 |
| 1987 | 563 | 千头 | 2026-9 |
| 1986 | 355 | 千头 | 2026-9 |
| 1985 | 664 | 千头 | 2026-9 |
| 1984 | 495 | 千头 | 2026-9 |
| 1983 | 923 | 千头 | 2026-9 |
| 1982 | 967 | 千头 | 2026-9 |
| 1981 | 764 | 千头 | 2026-9 |
| 1980 | 566 | 千头 | 2026-9 |
| 1979 | 772 | 千头 | 2026-9 |
| 1978 | 565 | 千头 | 2026-9 |
| 1977 | 611 | 千头 | 2026-9 |
| 1976 | 606 | 千头 | 2026-9 |
| 1975 | 547 | 千头 | 2026-9 |
| 1974 | 601 | 千头 | 2026-9 |
| 1973 | 519 | 千头 | 2026-9 |
| 1972 | 624 | 千头 | 2026-9 |
| 1971 | 533 | 千头 | 2026-9 |
| 1970 | 654 | 千头 | 2026-9 |
| 1969 | 585 | 千头 | 2026-9 |
| 1968 | 480 | 千头 | 2026-9 |
| 1967 | 475 | 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 |