YEAR CORRS RBAR SDEV SERR EPS CORES 1920. 105. 0.5221 0.1867 0.0182 0.9519 18.10 1930. 171. 0.6338 0.1321 0.0101 0.9719 19.95 1940. 190. 0.6946 0.1029 0.0075 0.9785 20.00 1950. 190. 0.5747 0.1534 0.0111 0.9643 20.00 1960. 190. 0.5192 0.1579 0.0115 0.9558 20.00 1970. 190. 0.4661 0.2678 0.0194 0.9458 20.00 1980. 190. 0.4720 0.2386 0.0173 0.9470 20.00