YEAR CORRS RBAR SDEV SERR EPS CORES 1920. 171. 0.4581 0.2648 0.0202 0.9440 19.95 1930. 190. 0.5334 0.1987 0.0144 0.9581 20.00 1940. 190. 0.4607 0.2539 0.0184 0.9447 20.00 1950. 190. 0.4103 0.2856 0.0207 0.9330 20.00 1960. 190. 0.3900 0.2913 0.0211 0.9275 20.00 1970. 190. 0.4257 0.2481 0.0180 0.9368 20.00 1980. 190. 0.4479 0.2508 0.0182 0.9419 20.00