1925	59.7	58.6	60.5	65.8	65.8	51.4	90.9	68.5	877
1926	59.7	59.4	63.3	63.3	68.0	52.6	92.1	69.6	899
1927	63.0	53.7	59.9	66.8	65.5	52.1	90.9	70.2	883
1928	71.0	48.1	56.3	69.9	64.8	52.7	90.9	71.9	884
1929	71.0	49.0	55.0	68.7	65.6	55.1	91.1	75.2	895
1930	74.2	48.2	59.6	66.1	62.4	48.8	90.7	68.3	874
1931	72.1	47.9	57.0	67.4	51.4	41.5	90.0	64.0	791
1932	79.0	46.0	49.5	69.7	42.8	31.4	87.8	53.9	733
1933	73.1	50.8	47.3	68.7	41.6	29.4	88.0	53.2	752
1934	70.2	55.2	56.6	62.2	46.4	33.2	89.1	58.0	811
1935	82.2	52.2	73.9	47.7	49.7	37.0	87.3	63.2	847
1936	68.4	57.3	64.4	54.4	50.1	41.8	90.5	70.5	845
1937	73.0	54.4	62.2	55.0	52.1	44.5	90.4	72.5	849
1938	70.2	53.6	59.9	57.4	48.4	40.8	90.6	67.8	803
1939	67.8	53.9	51.0	63.9	47.1	43.5	93.8	73.2	793
1940	63.4	54.2	41.5	72.4	47.8	46.5	95.5	77.6	798
1941	56.0	60.0	43.9	67.4	52.2	56.3	97.5	89.5	830