YEAR PBE CBE PPO CPO PFO DINC CFO RDINC RFP 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