"Year","From early to mid career - 12 years","From early to late career - 12 years","From mid to late career - 12 years","From early to mid career - 6 years","From early to late career - 6 years","From mid to late career - 6 years"
1914,,,66.22905,,,69.24103
1915,,,65.87931,,,67.21611
1916,,,63.04999,,,64.63584
1917,,,64.10964,,,65.50987
1918,,,67.06679,,,67.66172
1919,,,67.5147,,,69.96788
1920,,,65.68697,,,68.84117
1921,,,65.37293,,,69.53155
1922,,,65.54622,,,67.52768
1923,,,65.58803,,,69.60585
1924,,,64.82877,,,68.69806
1925,,,63.63317,,,67.28972
1926,67.93315,56.99111,63.99018,61.58341,53.54466,66.85438
1927,69.29082,57.53266,65.52087,61.8334,54.85435,67.48321
1928,69.9057,55.68379,64.40198,61.58041,54.74341,66.89489
1929,69.58803,53.62394,63.67215,60.9165,53.93635,65.71893
1930,71.23801,57.57273,64.87907,61.42349,56.42962,67.41754
1931,71.50336,60.29009,63.80707,62.21088,58.40948,66.58239
1932,69.09157,55.02909,63.78799,62.67166,55.39705,67.52752
1933,68.55046,54.16496,63.8806,61.85611,54.84805,66.02317
1934,68.57143,54.32049,63.43612,61.52229,55.25048,67.28735
1935,67.35915,53.84,62.83784,60.32473,53.68171,67.18686
1936,69.35372,53.58132,62.7701,62.84893,55.145,65.46995
1937,68.04333,54.78497,62.93952,61.83267,54.2196,65.05441
1938,68.22612,53.44322,63.53371,61.36364,54.08644,65.95184
1939,67.64052,52.72926,62.1182,60.43671,52.34813,65.73055
1940,68.1208,53.95559,63.65646,62.87719,52.66961,64.98922
1941,68.4669,52.21643,62.50765,61.94155,50.28593,64.88576
1942,66.80131,52.08034,64.74993,59.77881,50.83724,66.37032
1943,66.79716,52.13178,64.25398,60.29329,50.06423,65.24844
1944,66.00973,50.85482,64.15304,59.93427,50.16995,66.03476
1945,65.93238,50.68255,64.48535,59.30891,50,66.37681
1946,64.25048,50.6388,65.60303,59.18885,49.95683,67.52728
1947,65.40053,51.50348,65.9915,59.41138,50.80987,67.92714
1948,64.40511,49.14908,65.62058,57.38894,48.48718,67.54534
1949,64.48506,49.36646,64.94024,57.28814,48.70163,66.84505
1950,63.06358,47.54834,64.54162,56.04641,46.90799,66.43474
1951,63.87972,,,55.8532,,
1952,64.39367,,,55.50375,,
1953,64.12017,,,56.25745,,
1954,64.49704,,,56.4298,,
1955,64.75806,,,57.79525,,
1956,65.14724,,,59.0511,,
1957,66.02874,,,59.85011,,
1958,67.50674,,,61.1898,,
1959,64.915,,,58.84058,,
1960,67.02241,,,60.7508,,
1961,64.95003,,,58.87233,,
1962,64.75676,,,58.69715,,