1976 06 30.62 -99.99 -99.99 
1976 07 30.41 -99.99 -99.99 
1976 08 32.55 -99.99 -99.99 
1976 09 31.76 -99.99 -99.99 
1976 10 30.05 -99.99 -99.99 
1976 11 28.89 -99.99 -99.99 
1976 12 29.90 -99.99 -99.99 
1977 01 30.12 -99.99 -99.99 
1977 02 30.91 -99.99 -99.99 
1977 03 34.24 -99.99 -99.99 
1977 04 31.39 -99.99 -99.99 
1977 05 29.63 -99.99 -99.99 
1977 06 29.41 -99.99 -99.99 
1977 07 30.21 -99.99 -99.99 
1977 08 33.18  15.81  24.50 
1977 09 31.86  18.73  25.29 
1977 10 32.25  20.23  26.24 
1977 11 30.98  20.58  25.78 
1977 12 30.51  20.94  25.72 
1978 01 30.55  20.49  25.52 
1978 02 29.69  20.61  25.15 
1978 03 29.87  20.12  24.99 
1978 04 29.08  19.40  24.24 
1978 05 29.02  18.20  23.61 
1978 06 27.52  14.79  21.15 
1978 07 28.48  14.77  21.62 
1978 08 30.63  14.43  22.53 
1978 09 31.65  18.01  24.83 
1978 10 32.27  20.16  26.21 
1978 11 30.23 -99.99 -99.99 
1978 12 30.25  20.08  25.16 
1979 01 28.55  20.39  24.47 
1979 02 30.44  21.09  25.76 
1979 03 30.87  20.97  25.92 
1979 04 31.49  19.21  25.35 
1979 05 30.48  17.45  23.97 
1979 06 27.90  12.78  20.34 
1979 08 31.53  14.93  23.23 
1979 09 32.87  19.15  26.00 
1979 10 33.16  19.95  26.56 
1979 12 32.56  21.17  26.86 
1980 02 29.19  21.10  25.14 
1980 03 32.18  19.46  25.82 
1980 04 29.80  19.61  24.70 
1980 05 29.61  18.25  23.93 
1980 06 28.93  15.55  22.24 
1980 10 34.43  19.43  26.93 
1980 11 30.53  20.29  25.41 
1981 01 30.88  19.93  25.40 
1986 01 31.28  20.45  25.86 
1986 02 32.06  20.12  26.09 
1986 03 32.68  20.14  26.41 
1986 04 33.61  19.19  26.40 
1986 05 32.08  17.71  24.90 
1986 07 30.15  14.10  22.12 
1986 08 32.00  16.52  24.26 
1986 09 31.44  16.29  23.87 
1986 10 33.28  18.37  25.82 
1986 11 32.73  19.87  26.30 
1986 12 30.82  20.73  25.77 
1987 01 33.34  20.65  26.99 
1987 02 33.14  20.86  27.00 
1987 03 31.48  20.66  26.07 
1987 04 31.64  19.93  25.78 
1987 05 32.37  18.52  25.44 
1987 06 30.84  14.99  22.91 
1987 07 31.93  13.68  22.80 
1987 08 34.37  15.12  24.74 
1987 09 34.77  19.64  27.20 
1987 10 36.62  20.53  28.57 
1987 11 32.66  19.87  26.27 
1987 12 31.13  17.99  24.56 
1988 01 33.62  17.81  25.71 
1988 02 33.66  21.21  27.43 
1988 03 32.13  21.44  26.78 
1988 04 32.97  20.56  26.76 
1988 05 32.59  17.94  25.26 
1988 06 30.21  14.34  22.27 
1988 07 29.34  12.64  20.99 
1988 08 31.76  13.81  22.78 
1988 09 35.09  17.59  26.34 
1988 10 33.52  20.45  26.99 
1988 11 31.18  19.79  25.48 
1989 01 34.16  20.54  27.35 
1989 02 34.16  20.80  27.48 
1989 03 33.84  20.75  27.29 
1989 04 34.81  19.96  27.39 
1989 05 31.19  16.52  23.85 
1989 06 31.79  15.84  23.81 
1989 07 31.64  13.21  22.42 
1989 08 33.06  15.68  24.37 
1989 09 35.91  19.93  27.92 
1989 10 34.91  20.43  27.67 
1989 11 32.68  20.82  26.75 
1989 12 28.73  20.70  24.71 
1990 01 34.21  21.01  27.61 
1990 02 33.49  21.41  27.45 
1990 03 34.09  21.11  27.60 
1990 04 34.74  20.72  27.73 
1990 05 31.63  18.28  24.95 
1990 06 31.69  15.02  23.35 
1990 07 31.72  15.03  23.37 
1990 12 33.32  21.28  27.30 
1991 01 31.05  20.79  25.92 
1991 02 32.28  21.24  26.75 
1991 03 31.21  20.95  26.08 
1991 04 32.24  20.41  26.32 
1991 05 30.50  17.10  23.80 
1991 06 30.92  14.89  22.90 
1991 07 29.68  13.41  21.54 
1991 08 31.21  14.25  22.73 
1991 09 32.95  17.41  25.18 
1991 10 33.95  20.88  27.41 
1991 11 31.67  20.67  26.17 
1991 12 31.23  20.73  25.98 
1992 01 29.73  20.82  25.27 
1992 02 99.99  19.99 -99.99 
1992 03 99.99  19.87 -99.99 
1992 04 32.50  21.03  26.77 
1992 05 31.66  17.89  24.77 
1992 06 29.44  15.41  22.42 
1992 07 29.74  14.23  21.98 
1992 08 31.36  16.37  23.86 
1992 09 31.74  19.20  25.47 
1992 10 31.05  20.75  25.90 
1992 11 29.60  20.49  25.04 
1992 12 28.78  20.37  24.58 
1993 01 32.82  19.99  26.40 
1993 02 31.00  20.51  25.75 
1993 03 34.93  20.66  27.80 
1993 04 33.08  19.85  26.46 
1993 05 30.36  16.95  23.66 
1993 06 30.34  15.31  22.82 
1993 07 31.69  14.38  23.03 
1993 08 32.66  15.75  24.21 
1993 09 34.97  18.67  26.82 
1993 10 34.50  21.15  27.82 
1993 11 34.47  21.66  28.06 
1993 12 31.69  20.99  26.34 
1994 01 31.21  19.95  25.58 
1994 02 33.81  20.56  27.18 
1994 03 31.11  20.62  25.86 
1994 04 31.37  20.49  25.93 
1994 05 31.53  18.28  24.90 
1994 06 29.62  14.88  22.25 
1994 07 29.10  14.86  21.98 
1994 08 31.99  14.27  23.13 
1994 09 34.43  18.06  26.24 
1994 10 35.95  20.77  28.36 
1994 11 32.14  21.16  26.65 
1994 12 31.84  21.41  26.62 
1995 01 33.37  21.34  27.35 
1995 02 31.24  20.95  26.09 
1995 03 32.84  20.81  26.82 
1995 04 31.29  20.83  26.06 
1995 05 30.75  19.43  25.09 
1995 06 29.78  14.34  22.06 
1995 07 30.03  15.44  22.73 
1995 08 32.80  15.74  24.27 
1995 09 34.33  19.43  26.88 
1995 10 34.88  21.15  28.01 
1995 11 31.03  20.44  25.73 
1995 12 31.24  20.85  26.04 
1996 01 33.30  20.17  26.73 
1996 02 35.04  21.56  28.30 
1996 03 33.04  21.45  27.24 
1996 04 31.53  19.69  25.61 
1996 05 31.09  17.54  24.32 
1996 06 30.47  14.57  22.52 
1996 07 30.70  13.21  21.95 
1996 08 31.62  16.62  24.12 
1996 09 99.99  20.40 -99.99 
1996 11 99.99  21.10 -99.99 
1996 12 99.99  21.00 -99.99 
1997 01 99.99  20.90 -99.99 
1997 02 99.99  20.80 -99.99 
1997 03 99.99  20.50 -99.99 
1997 04 99.99  19.50 -99.99 
1997 05 99.99  17.10 -99.99 
1997 06 99.99  15.30 -99.99 
1997 07 99.99  14.30 -99.99 
1997 09 99.99  20.80 -99.99 
1997 11 34.90  22.30  28.60 
1997 12 99.99  21.10 -99.99 
1998 01 99.99  21.70 -99.99 
1998 02 34.59  22.30  28.45 
1998 03 34.30  22.00  28.15 
1998 04 34.80  21.50  28.15 
1998 05 99.99  18.90 -99.99 
1998 06 31.40  15.80  23.60 
1998 07 99.99  15.00 -99.99 
1998 08 99.99  18.10 -99.99 
1998 09 99.99  20.29 -99.99 
1998 10 34.40  22.10  28.25 
1998 11 99.99  21.50 -99.99 
1998 12 31.70  21.50  26.60 
1999 01 32.90 -99.99 -99.99 
1999 02 34.00  22.00  28.00 
1999 03 31.60  21.10  26.35 
1999 04 32.70  20.00  26.35 
1999 05 31.20  16.70  23.95 
1999 06 31.40  15.10  23.25 
1999 07 30.60  16.10  23.35 
1999 08 31.00  15.50  23.25 
1999 09 33.30  19.10  26.20 
1999 10 34.20  20.40  27.30 
1999 11 30.70  20.40  25.55 
1999 12 30.40  21.10  25.75 
2000 01 31.70  21.60  26.65 
2000 02 32.20  21.40  26.80 
2000 03 31.20  21.30  26.25 
2000 04 31.90  20.10  26.00 
2000 05 31.40  16.40  23.90 
2000 06 30.90  13.90  22.40 
2000 07 30.90  14.90  22.90 
2000 08 32.90  16.20  24.55 
2000 09 33.20  20.29  26.75 
2000 10 36.50  21.10  28.80 
2000 11 30.50  21.00  25.75 
2000 12 31.40  21.60  26.50 
2001 01 33.30  21.00  27.15 
2001 02 35.50  20.90  28.20 
2001 03 31.90  21.00  26.45 
2001 04 33.09  19.60  26.34 
2001 05 32.59  18.70  25.65 
2001 06 31.20  16.20  23.70 
2001 07 31.90  15.50  23.70 
2001 08 31.70  16.79  24.25 
2001 09 34.30  20.20  27.25 
2001 10 31.90  20.70  26.30 
2001 11 31.70  21.50  26.60 
2001 12 31.10  21.40  26.25 
2002 01 32.59  21.70  27.15 
2002 02 32.00  21.40  26.70 
2002 03 32.80  21.20  27.00 
2002 04 33.50  20.20  26.85 
2002 05 32.50  17.70  25.10 
2002 06 31.00  16.00  23.50 
2002 07 32.00  16.90  24.45 
2002 08 33.30  17.20  25.25 
2002 09 33.90  19.40  26.65 
2002 10 37.30  20.70  29.00 
2002 11 33.70  21.50  27.60 
2002 12 32.50  21.80  27.15 
2003 01 31.70  21.80  26.75 
2003 02 33.50  21.40  27.45 
2003 03 99.99  21.60 -99.99 
2003 04 32.70  20.90  26.80 
2003 05 30.80  17.70  24.25 
2003 06 30.70  14.40  22.55 
2003 07 30.10  14.00  22.05 
2003 08 32.50  17.29  24.90 
2003 09 34.50  19.00  26.75 
2003 10 35.30  19.90  27.59 
2003 11 33.50  20.20  26.85 
2003 12 33.59  21.10  27.34 
2004 01 30.50  21.20  25.85 
2004 02 29.90  20.29  25.09 
2004 03 31.30  20.29  25.80 
2004 04 30.60  19.40  25.00 
2004 05 31.40  18.60  25.00 
2004 06 29.50  15.20  22.35 
2004 07 28.80  15.00  21.90 
2004 08 31.90  15.60  23.75 
2004 09 34.80  17.79  26.30 
2004 10 35.50  22.00  28.75 
2004 11 34.30  22.30  28.30 
2004 12 31.70  21.40  26.55 
