1931 01   .10 -10.61  -5.25 
1931 02  1.20 -99.99 -99.99 
1931 03  5.75  -2.81   1.47 
1931 04 14.05   1.54   7.79 
1931 05 21.22   7.94  14.58 
1931 06 25.10  12.32  18.70 
1931 07 27.76  16.50  22.13 
1931 08 25.40  14.59  19.99 
1931 09 23.72  11.58  17.65 
1931 10 17.91   6.23  12.07 
1931 11 11.46   1.66   6.56 
1931 12  3.90  -6.11  -1.10 
1932 01  4.78  -4.67    . 5 
1932 02  1.23  -8.72  -3.74 
1932 03  3.49  -6.88  -1.69 
1932 04 12.66    . 1   6.33 
1932 05 21.07   6.95  14.01 
1932 06 24.42  11.67  18.04 
1932 07 26.73  13.33  20.02 
1932 08 27.29  14.66  20.97 
1932 10 16.19   6.11  11.15 
1932 11  7.32  -3.05   2.13 
1932 12  4.57  -5.30   -.36 
1933 01  4.30  -5.20   -.44 
1933 02  2.21  -8.16  -2.97 
1933 03  2.73  -4.92  -1.09 
1933 04 10.92    .65   5.78 
1933 05 21.66   8.34  15.00 
1933 06 26.48  12.36  19.42 
1933 07 27.52  13.87  20.69 
1933 08 25.56  14.39  19.97 
1933 09 21.78  10.62  16.20 
1933 10 14.69   3.70   9.19 
1933 11  6.62  -4.87    .87 
1933 12 99.99 -10.04 -99.99 
1934 01 99.99  -8.91 -99.99 
1934 02 -4.05 -16.54 -10.29 
