| 年份 | 單位：萬人 |
| 2011 | 247.10 |
| 2010 | 279.80 |
| 2009 | 315.20 |
| 2008 | 294.10 |
| 2007 | 306.90 |
| 2006 | 294.00 |
| 2005 | 259.27 |
| 2004 | 229.10 |
| 2003 | 222.10 |
| 2002 | 216.88 |
| 2001 | 185.02 |
| 2000 | 182.70 |
| 1999 | 194.10 |
| 1998 | 217.60 |
| 1997 | 211.20 |
| 1996 | 188.90 |
| 1995 | 190.10 |
| 1994 | 175.30 |
| 1993 | 161.50 |
| 1992 | 152.10 |
| 1991 | 137.80 |
| 1990 | 123.20 |
| 1989 | 118.30 |
| 1988 | 119.50 |
| 1987 | 113.20 |
| 1986 | 112.80 |
| 1985 | 116.10 |
| 1984 | 93.90 |
| 1983 | 75.70 |
| 1982 | 42.60 |
| 1981 | 26.70 |
| 1980 | 30.70 |
| 1965 | 306.50 |
| 1964 | 88.60 |
| 1963 | 16.70 |
| 1962 | 14.90 |
| 1961 | 29.70 |
| 1960 | 95.30 |
| 1959 | 105.20 |
| 1958 | 200.00 |
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