1919 12  3.61  -9.02  -2.70 
1920 01  1.83 -99.99 -99.99 
1920 02  4.96 -99.99 -99.99 
1920 03 10.77   -.51   5.13 
1920 04 15.36   3.67   9.51 
1920 05 17.84   9.82  13.83 
1920 06 23.20  14.71  18.95 
1920 07 25.55  15.54  20.54 
1920 08 23.25  15.85  19.54 
1920 09 23.89  12.46  18.17 
1920 10 22.61   8.14  15.37 
1920 11 13.81    .25   7.03 
1920 12  1.65  -4.17  -1.26 
1921 01  3.10  -5.00   -.95 
1921 02  3.32  -3.71   -.19 
1921 04 15.04   6.61  10.82 
1921 05 16.17   9.82  12.99 
1921 06 22.39  15.86  19.12 
1921 07 24.50  18.21  21.36 
1921 08 20.68  15.35  18.01 
1921 09 22.77  14.99  18.88 
1921 10 15.89   5.13  10.51 
1921 11  7.72   2.15   4.93 
1921 12   .25  -4.09  -1.92 
1923 08 22.14  15.45  18.79 
1923 09 21.41  11.93  16.67 
1926 05 19.84  10.29  15.06 
1929 07 24.06  15.46  19.76 
1931 11 13.17   5.72   9.44 
1932 05 18.65  10.36  14.50 
1932 07 24.66  16.82  20.74 
1932 09 22.81  13.62  18.21 
1932 10 14.89   6.62  10.75 
1932 11  7.55   -.58   3.48 
1933 02  4.13  -6.16  -1.01 
1937 05 17.52   7.38  12.45 
1948 01 -1.07 -12.16  -6.61 
1948 02  4.12  -8.16  -2.02 
1948 03  9.72  -1.56   4.08 
1948 04 15.58   3.72   9.64 
1948 05 17.70   5.94  11.82 
1948 06 22.82  11.81  17.31 
1948 07 99.99  14.07 -99.99 
1955 04 15.26   3.76   9.51 
1970 01  -.48 -99.99 -99.99 
1970 06 21.97  11.83  16.90 
1971 01  -.32 -10.60  -5.46 
