| 年份 | 单位：万人 |
| 2012 | 购买后可见 » |
| 2011 | 购买后可见 » |
| 2010 | 购买后可见 » |
| 2009 | 购买后可见 » |
| 2008 | 购买后可见 » |
| 2007 | 购买后可见 » |
| 2006 | 购买后可见 » |
| 2005 | 购买后可见 » |
| 2004 | 购买后可见 » |
| 2003 | 购买后可见 » |
| 2002 | 437.63 |
| 2001 | 418.84 |
| 2000 | 400.55 |
| 1999 | 384.10 |
| 1998 | 369.70 |
| 1997 | 358.70 |
| 1996 | 346.50 |
| 1995 | 333.40 |
| 1994 | 323.40 |
| 1993 | 316.70 |
| 1992 | 314.10 |
| 1991 | 309.00 |
| 1990 | 303.30 |
| 1989 | 298.00 |
| 1988 | 296.00 |
| 1987 | 287.00 |
| 1986 | 275.80 |
| 1985 | 265.20 |
| 1984 | 255.70 |
| 1983 | 259.70 |
| 1982 | 268.10 |
| 1981 | 284.40 |
| 1980 | 302.00 |
| 1979 | 307.80 |
| 1978 | 318.20 |
| 1977 | 318.70 |
| 1976 | 272.90 |
| 1975 | 209.20 |
| 1974 | 178.20 |
| 1973 | 169.60 |
| 1972 | 165.70 |
| 1971 | 132.70 |
| 1970 | 117.40 |
| 1969 | 93.80 |
| 1968 | 70.10 |
| 1967 | 60.40 |
| 1966 | 59.70 |
| 1965 | 45.70 |
| 1964 | 44.20 |
| 1963 | 42.00 |
| 1962 | 39.90 |
| 1961 | 41.80 |
| 1960 | 42.60 |
| 1959 | 35.00 |
| 1958 | 30.50 |
| 1957 | 23.40 |
| 1956 | 18.70 |
| 1955 | 14.90 |
| 1954 | 13.80 |
| 1953 | 11.30 |
| 1952 | 9.40 |
| 1951 | 7.30 |
| 1950 | 6.90 |
| 1949 | 6.70 |
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