18-23Ҫ,,,,,,,,
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,ܼ,#,#,#Ӿ,,#ѵ,,
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1950,19,1,,,,2,,
1955,61,1,,,2,10,,
1960,124,2,,4,3,19,,
1970,188,2,2,8,3,24,,
1975,234,3,2,11,4,28,,
1980,293,3,2,12,4,32,,
1985,405,4,2,20,8,54,,
1990,780,12,12,49,26,153,,
1995,1381,18,18,88,56,291,,
2000,2815,35,24,214,161,863,,
2001,3500,42,27,283,216,1101,,
2002,4176,57,33,334,263,1358,,
2003,6100,93,36,443,371,1729,,
2004,6104,93,36,443,371,1729,,
2005,6112,93,36,446,374,1731,,
2006,6122,93,36,446,374,1734,,
2007,6146,94,37,446,374,1736,,
2008,6149,94,37,446,374,1739,,
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