| 年度 | 数值 | 单位 | 发布日期 |
| 2003 | 365 | 千头 | 2026-9 |
| 2002 | 355 | 千头 | 2026-9 |
| 2001 | 350 | 千头 | 2026-9 |
| 2000 | 350 | 千头 | 2026-9 |
| 1999 | 356 | 千头 | 2026-9 |
| 1998 | 358 | 千头 | 2026-9 |
| 1997 | 360 | 千头 | 2026-9 |
| 1996 | 375 | 千头 | 2026-9 |
| 1995 | 330 | 千头 | 2026-9 |
| 1994 | 320 | 千头 | 2026-9 |
| 1993 | 345 | 千头 | 2026-9 |
| 1992 | 340 | 千头 | 2026-9 |
| 1991 | 370 | 千头 | 2026-9 |
| 1990 | 370 | 千头 | 2026-9 |
| 1989 | 380 | 千头 | 2026-9 |
| 1988 | 340 | 千头 | 2026-9 |
| 1987 | 297 | 千头 | 2026-9 |
| 1986 | 325 | 千头 | 2026-9 |
| 1985 | 290 | 千头 | 2026-9 |
| 1984 | 360 | 千头 | 2026-9 |
| 1983 | 357 | 千头 | 2026-9 |
| 1982 | 412 | 千头 | 2026-9 |
| 1981 | 500 | 千头 | 2026-9 |
| 1980 | 496 | 千头 | 2026-9 |
| 1979 | 529 | 千头 | 2026-9 |
| 1978 | 473 | 千头 | 2026-9 |
| 1977 | 417 | 千头 | 2026-9 |
| 1976 | 366 | 千头 | 2026-9 |
| 1975 | 333 | 千头 | 2026-9 |
| 1974 | 350 | 千头 | 2026-9 |
| 1973 | 349 | 千头 | 2026-9 |
| 1972 | 370 | 千头 | 2026-9 |
| 1971 | 361 | 千头 | 2026-9 |
| 1970 | 333 | 千头 | 2026-9 |
| 1969 | 337 | 千头 | 2026-9 |
| 1968 | 335 | 千头 | 2026-9 |
| 1967 | 294 | 千头 | 2026-9 |
| 1966 | 269 | 千头 | 2026-9 |
| 1965 | 256 | 千头 | 2026-9 |
| 1964 | 264 | 千头 | 2026-9 |
| 1963 | 269 | 千头 | 2026-9 |
| 1962 | 229 | 千头 | 2026-9 |
| 1961 | 204 | 千头 | 2026-9 |
| 1960 | 197 | 千头 | 2026-9 |