Historical population of japan
Year Pop. ±%
1910 50,984,840
1915 54,935,755 +7.7%
1920 55,963,053 +1.9%
1925 59,736,822 +6.7%
1930 64,450,005 +7.9%
1935 69,254,148 +7.5%
1940 73,075,071 +5.5%

Demographics of Japan – Wikipedia, the free encyclopedia.