性別出生数及び出生性比：1872〜2004年
年次	総  数	男	女	出生1)	年次	総  数	男	女	出生1)
				性比					性比
1872	569,034	290,836	278,198	104.5	1971	2,000,973	1,032,937	968,036	106.7
1880	883,584	452,327	431,257	104.9	1972	2,038,682	1,051,389	987,293	106.5
1890	1,145,374	586,121	559,253	104.8	1973	2,091,983	1,077,517	1,014,466	106.2
1900	1,420,534	727,916	692,618	105.1	1974	2,029,989	1,046,538	983,451	106.4
1910	1,712,857	872,779	840,078	103.9	1975	1,901,440	979,091	922,349	106.2
1920	2,025,564	1,035,134	990,430	104.5	1976	1,832,617	943,829	888,788	106.2
1930	2,085,101	1,069,551	1,015,549	105.3	1977	1,755,100	903,380	851,720	106.1
1940	2,115,867	1,084,282	1,031,585	105.1	1978	1,708,643	879,149	829,494	106.0
1941	2,277,283	1,165,437	1,111,846	104.8	1979	1,642,580	845,884	796,696	106.2
1942	2,233,660	1,145,068	1,088,592	105.2	1980	1,576,889	811,418	765,471	106.0
1943	2,253,535	1,155,983	1,097,552	105.3	1981	1,529,455	786,596	742,859	105.9
1947	2,678,792	1,376,986	1,301,806	105.8	1982	1,515,392	777,855	737,537	105.5
1948	2,681,624	1,378,564	1,303,060	105.8	1983	1,508,687	775,206	733,481	105.7
1949	2,696,638	1,380,008	1,316,630	104.8	1984	1,489,780	764,597	725,183	105.4
1950	2,337,507	1,203,111	1,134,396	106.1	1985	1,431,577	735,284	696,293	105.6
1951	2,137,689	1,094,641	1,043,048	104.9	1986	1,382,946	711,301	671,645	105.9
1952	2,005,162	1,028,061	977,101	105.2	1987	1,346,658	692,304	654,354	105.8
1953	1,868,040	957,524	910,516	105.2	1988	1,314,006	674,883	639,123	105.6
1954	1,769,580	911,212	858,368	106.2	1989	1,246,802	640,506	606,296	105.6
1955	1,730,692	889,670	841,022	105.8	1990	1,221,585	626,971	594,614	105.4
1956	1,665,278	856,084	809,194	105.8	1991	1,223,245	628,615	594,630	105.7
1957	1,566,713	805,220	761,493	105.7	1992	1,208,989	622,136	586,853	106.0
1958	1,653,469	848,733	804,736	105.5	1993	1,188,282	610,244	578,038	105.6
1959	1,626,088	835,822	790,266	105.8	1994	1,238,328	635,915	602,413	105.6
1960	1,606,041	824,761	781,280	105.6	1995	1,187,064	608,547	578,517	105.2
1961	1,589,372	817,599	771,773	105.9	1996	1,206,555	619,793	586,762	105.6
1962	1,618,616	833,269	785,347	106.1	1997	1,191,665	610,905	580,760	105.2
1963	1,659,521	852,561	806,960	105.7	1998	1,203,147	617,414	585,733	105.4
1964	1,716,761	882,924	833,837	105.9	1999	1,177,669	604,769	572,900	105.6
1965	1,823,697	935,366	888,331	105.3	2000	1,190,547	612,148	578,399	105.8
1966	1,360,974	705,463	655,511	107.6	2001	1,170,662	600,918	569,744	105.5
1967	1,935,647	992,778	942,869	105.3	2002	1,153,855	592,840	561,015	105.7
1968	1,871,839	967,996	903,843	107.1	2003	1,123,610	576,736	546,874	105.5
1969	1,889,815	977,687	912,128	107.2	2004	1,110,721	569,559	541,162	105.2
1970	1,934,239	1,000,403	933,836	107.1