1989 02 -9.80 -17.51 -13.65 
1989 03 15.88 -24.87 -20.37 
1989 04 24.12 -34.33 -29.22 
1989 05 27.72 -37.90 -32.81 
1989 06 21.68 -31.89 -26.78 
1989 07 19.61 -31.38 -25.49 
1989 08 26.57 -36.05 -31.31 
1989 09 21.18 -33.04 -27.11 
1989 10 17.54 -27.79 -22.66 
1989 11 -6.71 -16.15 -11.43 
1989 12   .21 -10.25  -5.02 
1990 01  1.09  -7.90  -3.40 
1990 02 -9.42 -19.00 -14.21 
1990 03 19.95 -28.03 -23.99 
1990 04 23.96 -33.08 -28.52 
1990 05 24.61 -35.03 -29.82 
1990 06 23.67 -33.59 -28.63 
1990 07 31.33 -39.18 -35.25 
1990 08 29.34 -38.75 -34.04 
1990 09 19.06 -32.00 -25.53 
1990 10 18.98 -29.63 -24.30 
1990 11 -7.07 -13.84 -10.45 
1990 12  -.25 -10.73  -5.49 
1991 01  1.52  -8.47  -3.47 
1991 02 -7.24 -17.42 -12.33 
1991 03 20.37 -31.24 -25.81 
1991 04 20.08 -28.64 -24.36 
1991 05 27.01 -37.59 -32.30 
1991 06 26.26 -36.81 -31.53 
1991 07 26.83 -37.16 -31.99 
1991 08 29.68 -41.10 -35.39 
1991 09 19.28 -30.15 -24.71 
1991 10 17.43 -29.06 -23.24 
1991 11 -6.37 -19.61 -12.99 
1991 12  1.83  -9.20  -3.68 
1992 01  -.65 -10.24  -5.44 
1992 02 -7.81 -16.69 -12.25 
1992 03 20.67 -32.38 -26.52 
1992 04 17.69 -29.06 -23.37 
1992 05 27.19 -36.43 -31.81 
1992 06 22.82 -34.74 -28.78 
1992 07 27.84 -37.89 -32.86 
1992 08 32.36 -42.32 -37.34 
