1971 12 -16.61 -25.90 -21.25 
1972 02 -24.65 -31.38 -28.01 
1972 03 -19.12 -28.64 -23.88 
1972 04  -7.71 -16.52 -12.11 
1972 05  -2.91  -9.45  -6.18 
1972 06   1.69  -3.41   -.86 
1972 07   7.88   1.25   4.56 
1972 08 -99.99   0.98 -99.99 
1972 09   3.76   -.15   1.80 
1972 10  -1.87  -6.77  -4.32 
1972 11  -6.94 -12.95  -9.94 
1972 12 -20.50 -26.86 -23.68 
1973 01 -99.99 -26.04 -99.99 
1973 02 -21.56 -29.91 -25.73 
1973 03 -16.04 -24.60 -20.32 
1973 04  -8.27 -16.54 -12.41 
1973 05   0.78  -5.21  -2.21 
1973 06   5.15   -.32   2.41 
1973 07   9.49   1.75   5.62 
1973 08  11.67   3.25   7.46 
1973 09   5.67   1.69   3.68 
1973 10   1.09  -2.15   -.53 
1973 12 -10.75 -15.85 -13.30 
1974 01 -21.92 -28.00 -24.96 
1974 02 -17.28 -24.47 -20.87 
1974 03 -18.64 -26.01 -22.32 
1974 04  -9.30 -99.99 -99.99 
1974 05   -.75  -6.35  -3.55 
1974 06   6.71   0.26   3.48 
1974 07  11.28   3.67   7.47 
1974 08  10.04   4.39   7.21 
1974 09   4.25   0.13   2.19 
1974 10   -.74  -4.90  -2.82 
1974 11  -3.74  -8.54  -6.14 
1974 12 -99.99 -22.01 -99.99 
1975 01 -99.99 -27.97 -99.99 
1975 02 -17.82 -24.82 -21.32 
1975 03 -17.68 -26.24 -21.96 
1975 04  -8.62 -19.60 -14.11 
1975 05   0.83  -4.63  -1.90 
1975 06   6.46   0.07   3.26 
1975 07  11.79   3.56   7.67 
1975 08  10.30   4.37   7.33 
1975 09   5.69   1.29   3.49 
1975 10   0.71  -2.43   -.86 
1975 11  -4.01  -8.87  -6.44 
1975 12 -13.93 -21.80 -17.86 
1976 01 -99.99 -25.36 -99.99 
1976 02 -21.05 -29.86 -25.45 
1976 03 -17.64 -25.90 -21.77 
1976 04  -7.65 -15.11 -11.38 
1976 05   0.86  -5.12  -2.12 
1976 06   5.09   -.95   2.07 
1976 07   9.60   1.23   5.42 
1976 08   8.33   0.85   4.59 
1976 09   4.11   -.52   1.79 
1976 10  -1.78  -5.24  -3.50 
1976 11  -4.36  -8.31  -6.33 
1977 01 -10.27 -20.51 -15.39 
1977 02 -99.99 -22.72 -99.99 
1977 04 -99.99 -18.37 -99.99 
1977 05   0.07  -5.74  -2.83 
1977 06   5.34   -.14   2.60 
1977 07   8.63   2.03   5.33 
1977 08   9.21   3.03   6.12 
1977 09   5.82   0.61   3.21 
1977 10   0.58  -3.29  -1.35 
1977 11  -1.97  -6.67  -4.32 
1977 12 -13.15 -19.92 -16.53 
1978 01 -22.33 -30.39 -26.36 
1978 02 -99.99 -22.90 -99.99 
1978 03 -20.32 -29.70 -25.01 
1978 04  -8.82 -18.14 -13.48 
1978 05  -1.20  -8.17  -4.68 
1978 06   5.03  -2.99   1.02 
1978 07   9.33   1.08   5.20 
1978 08   8.06   1.12   4.59 
1978 09   2.64  -1.27   0.68 
1978 10  -1.83  -6.80  -4.31 
1978 11 -11.23 -19.19 -15.21 
1978 12 -10.93 -99.99 -99.99 
1979 01 -14.55 -25.61 -20.08 
1979 02 -23.49 -29.58 -26.53 
1979 04 -99.99 -14.50 -99.99 
1979 05   1.27  -4.17  -1.45 
1979 06   4.12  -1.62   1.25 
1979 07  10.70   2.31   6.50 
1979 08  10.47   3.18   6.82 
1979 09   5.77   1.09   3.43 
1979 10   0.33  -3.79  -1.73 
1979 11  -4.71 -10.42  -7.56 
1979 12 -99.99 -21.23 -99.99 
1980 01 -14.46 -22.11 -18.28 
1980 02 -18.16 -23.76 -20.96 
1980 04  -5.68 -17.70 -11.69 
1980 05   0.93  -4.13  -1.60 
1980 06   3.92   -.24   1.84 
1980 07  10.34   2.17   6.25 
1980 08  10.65   4.42   7.53 
1980 09   4.75   0.27   2.51 
1980 10 -99.99  -3.01 -99.99 
1980 11  -4.44  -9.55  -6.99 
1981 02 -15.31 -24.35 -19.83 
1981 03  -7.54 -16.48 -12.01 
1981 04  -8.18 -17.87 -13.03 
1981 05  -1.27  -7.46  -4.36 
1981 06   3.98   -.67   1.65 
1981 07  11.70   3.89   7.79 
1981 08  10.61   2.97   6.79 
1982 04  -9.78 -21.53 -15.65 
1982 05   -.58  -6.77  -3.67 
1982 06   3.17  -1.16   1.00 
1982 07  10.50   3.13   6.81 
1982 08   7.39   2.43   4.91 
1982 09 -99.99   -.84 -99.99 
1984 10 -99.99  -3.89 -99.99 
1984 11  -4.55  -8.85  -6.70 
1984 12 -17.10 -25.81 -21.45 
1985 01 -11.41 -19.89 -15.65 
1985 03 -15.48 -25.27 -20.37 
1985 04 -10.01 -18.42 -14.21 
1985 05   -.35  -5.89  -3.12 
1985 06   5.68   0.52   3.10 
1985 07  10.67   3.08   6.87 
1985 08  10.98   4.21   7.59 
1985 09   6.74   1.88   4.31 
1985 10   0.83  -2.42   -.79 
1985 12  -7.99 -14.68 -11.33 
1986 03 -17.90 -26.30 -22.09 
1986 04  -6.79 -16.31 -11.54 
1986 11 -11.19 -18.37 -14.78 
1987 05  -2.13  -8.60  -5.37 
1987 10   -.33  -3.34  -1.83 
2008 06 -99.99   5.42 -99.99 
2008 08 -99.99   7.82 -99.99 
2009 02 -99.99 -16.21 -99.99 
2009 06 -99.99   3.84 -99.99 
2009 08  21.47   6.48  13.97 
2010 05 -99.99  -0.01 -99.99 
2010 06 -99.99   5.74 -99.99 
2010 10 -99.99  -1.77 -99.99 
2012 05 -99.99   0.46 -99.99 
2013 05 -99.99   2.84 -99.99 
