不能凭想象说以后每年能生多少孩子，先看以前每年生了多少孩子，这些新生儿中女性占比少于50%。这些当年的新生儿女性能够1：2生养后代的比例会是多少？
1980 18,393,809
1981 19,122,938
1982 23,100,427
1983 20,065,048
1984 20,313,426
1985 20,429,326 1986 23,190,076
1987 25,282,644
1988 24,576,191
1989 25,137,678
1990 26,210,044
1991 20,082,026
1992 18,752,106
1993 17,914,756
1994 16,470,140
1995 16,933,559
1996 15,224,282
1997 14,454,335
1998 14,010,711
1999 11,495,247
2000 13,793,799
2001 17,020,000
2002 16,470,000
2003 15,990,000
2004 15,930,000
2005 16,170,000
2006 15,840,000
2007 15,940,000
2008 16,080,000
2009 16,150,000
2010 15,740,000
2011 16,040,000
2012 16,350,000
2013 16,400,000
2014 16,870,000
(此文由开车上网在2015-11-02 16:06:07编辑过)
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2015-11-02 16:02:43
