| 年度 | 数值 | 单位 | 发布日期 |
| 2026 | 29500 | 千头 | 2026-9 |
| 2025 | 29500 | 千头 | 2026-9 |
| 2024 | 29550 | 千头 | 2026-9 |
| 2023 | 30000 | 千头 | 2026-9 |
| 2022 | 29850 | 千头 | 2026-9 |
| 2021 | 29850 | 千头 | 2026-9 |
| 2020 | 31300 | 千头 | 2026-9 |
| 2019 | 29900 | 千头 | 2026-9 |
| 2018 | 29500 | 千头 | 2026-9 |
| 2017 | 29500 | 千头 | 2026-9 |
| 2016 | 29500 | 千头 | 2026-9 |
| 2015 | 29750 | 千头 | 2026-9 |
| 2014 | 29450 | 千头 | 2026-9 |
| 2013 | 29900 | 千头 | 2026-9 |
| 2012 | 32100 | 千头 | 2026-9 |
| 2011 | 35000 | 千头 | 2026-9 |
| 2010 | 34000 | 千头 | 2026-9 |
| 2009 | 34000 | 千头 | 2026-9 |
| 2008 | 32912 | 千头 | 2026-9 |
| 2007 | 28832 | 千头 | 2026-9 |
| 2006 | 30000 | 千头 | 2026-9 |
| 2005 | 31302 | 千头 | 2026-9 |
| 2004 | 30607 | 千头 | 2026-9 |
| 2003 | 35730 | 千头 | 2026-9 |
| 2002 | 36000 | 千头 | 2026-9 |
| 2001 | 36750 | 千头 | 2026-9 |
| 2000 | 37750 | 千头 | 2026-9 |
| 1999 | 38750 | 千头 | 2026-9 |
| 1998 | 39750 | 千头 | 2026-9 |
| 1997 | 41564 | 千头 | 2026-9 |
| 1996 | 40500 | 千头 | 2026-9 |
| 1995 | 39500 | 千头 | 2026-9 |
| 1994 | 30200 | 千头 | 2026-9 |
| 1993 | 30300 | 千头 | 2026-9 |
| 1992 | 34900 | 千头 | 2026-9 |
| 1991 | 28135 | 千头 | 2026-9 |
| 1990 | 27709 | 千头 | 2026-9 |
| 1989 | 28502 | 千头 | 2026-9 |
| 1988 | 27224 | 千头 | 2026-9 |
| 1987 | 27425 | 千头 | 2026-9 |
| 1986 | 27000 | 千头 | 2026-9 |
| 1985 | 30480 | 千头 | 2026-9 |
| 1984 | 30325 | 千头 | 2026-9 |
| 1983 | 30180 | 千头 | 2026-9 |
| 1982 | 30080 | 千头 | 2026-9 |
| 1981 | 24460 | 千头 | 2026-9 |
| 1980 | 25255 | 千头 | 2026-9 |
| 1979 | 24265 | 千头 | 2026-9 |
| 1978 | 23625 | 千头 | 2026-9 |
| 1977 | 23325 | 千头 | 2026-9 |
| 1976 | 24975 | 千头 | 2026-9 |
| 1975 | 24845 | 千头 | 2026-9 |
| 1974 | 0 | 千头 | 2026-9 |
| 1973 | 0 | 千头 | 2026-9 |
| 1972 | 0 | 千头 | 2026-9 |
| 1971 | 0 | 千头 | 2026-9 |
| 1970 | 0 | 千头 | 2026-9 |
| 1969 | 0 | 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 |