1955昭和3097885--284.81343.7 1960昭和359954616611.7284.8349.5 1965昭和4010223926932.7286.26357.2 1970昭和4510406518261.8286.26363.5 1975昭和5010865045854.4286.26379.6 1980昭和5511452858785.4286.26400.1 1985昭和6011814036123.2286.26412.7 1990平成21190809400.8286.38415.8 1995平成71196405600.5286.38417.8 2000平成12118118-1522-1.3315.28374.6 2005平成1712224841303.5343.46355.9 2010平成2212622039723.2383.03329.5 2015平成27124062-2158-1.7382.97323.9 2020令和2117376-6686-5.4382.97306.5