| 年份 | 单位：万人 |
| 2010 | 15893.00 |
| 2009 | 15588.00 |
| 2008 | 15451.00 |
| 2007 | 15090.00 |
| 2006 | 14680.00 |
| 2005 | 14272.00 |
| 2004 | 13866.00 |
| 2003 | 13573.00 |
| 2002 | 13288.00 |
| 2001 | 13086.00 |
| 2000 | 12820.00 |
| 1999 | 12704.00 |
| 1998 | 12537.00 |
| 1997 | 13050.00 |
| 1996 | 13508.00 |
| 1995 | 12862.00 |
| 1994 | 12017.00 |
| 1993 | 12345.00 |
| 1992 | 10625.00 |
| 1991 | 9609.00 |
| 1990 | 9265.00 |
| 1989 | 9367.00 |
| 1988 | 9545.00 |
| 1987 | 8805.00 |
| 1986 | 7937.00 |
| 1985 | 6979.00 |
| 1980 | 3000.00 |
| 1978 | 2827.00 |
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