1978 02  8.96    .75   4.85 
1978 03 17.86   5.75  11.80 
1978 04 21.63   8.66  15.14 
1978 05 25.35  11.73  18.54 
1978 06 34.45  19.24  26.84 
1978 07 37.78  22.76  30.27 
1978 09 30.08  14.54  22.31 
1978 10 24.85  10.06  17.45 
1978 11 13.72   2.80   8.26 
1979 01  1.08  -8.68  -3.80 
1979 02  4.63  -7.54  -1.45 
1979 03 14.20    .29   7.24 
1979 04 20.96   7.30  14.12 
1979 05 26.75   9.87  18.31 
1979 06 33.41 -99.99 -99.99 
1980 07 37.45  22.92  30.18 
1980 08 35.23  20.97  28.09 
1980 09 30.55  15.52  23.03 
1980 10 21.60   7.50  14.55 
1981 01 12.36  -1.29   5.53 
1981 04 23.30  10.00  16.65 
1981 05 26.00  13.01  19.50 
1981 06 35.41  21.28  28.34 
1981 07 36.70  22.87  29.78 
1981 11 17.19   4.59  10.89 
1982 02  8.55  -1.58   3.48 
1982 03 14.96   3.45   9.20 
1982 04 20.35   7.19  13.77 
1982 05 26.56  13.59  20.07 
1982 06 32.30  18.29  25.30 
1982 07 35.80  21.66  28.73 
1982 08 33.89  20.49  27.18 
1982 09 29.89  17.06  23.47 
1982 10 20.68   8.95  14.81 
1982 12  7.58  -1.67   2.95 
1983 01  7.40  -2.46   2.47 
1983 02 12.43 -99.99 -99.99 
1983 03 14.72   4.32   9.52 
1983 04 17.50   5.07  11.28 
1983 07 36.66 -99.99 -99.99 
1983 08 35.84 -99.99 -99.99 
1983 09 32.41  16.84  24.63 
1983 11 14.96   3.44   9.20 
1984 02 10.10  -3.29   3.41 
1984 03 15.09   2.29   8.69 
1984 04 18.92   5.22  12.07 
1984 05 30.53  14.60  22.56 
1984 06 31.93  17.79  24.86 
1984 07 36.84  22.95  29.89 
1984 08 34.82  22.06  28.43 
1984 09 31.70  17.33  24.51 
1984 10 19.00   6.69  12.84 
1984 11 14.62   1.89   8.25 
1984 12  6.78   -.97   2.90 
1985 01  7.43  -1.70   2.86 
1985 02  8.00  -3.71   2.14 
1985 03 14.54   2.33   8.43 
1985 04 22.41   8.27  15.34 
1985 05 27.81  14.17  20.99 
1985 06 35.09  19.18  27.13 
1985 07 37.15  22.55  29.85 
1985 08 36.38  22.11  29.24 
1985 09 27.91  15.21  21.56 
1985 10 21.86   8.80  15.33 
1985 11 14.36   4.06   9.21 
1986 01 11.36 -99.99 -99.99 
1986 02 13.65   1.38   7.51 
1986 03 19.90   5.18  12.54 
1986 04 20.79   8.53  14.66 
1986 05 26.96  12.15  19.55 
1986 06 35.20  17.93  26.56 
1986 07 35.04  20.62  27.83 
1986 08 36.00  21.95  28.98 
1986 09 26.83  14.77  20.80 
1986 10 20.37   7.78  14.08 
1986 11 14.18   3.42   8.80 
1986 12  7.41  -2.72   2.34 
1987 01  5.26  -5.30    .-1 
1987 02 10.68    .21   5.44 
1987 03 13.85   1.96   7.90 
1987 04 23.58   9.14  16.36 
1987 05 26.87  14.31  20.59 
1987 06 34.75  19.89  27.32 
1987 07 35.00  21.11  28.05 
1987 08 34.41  20.64  27.52 
1987 09 31.29  15.96  23.62 
1987 10 25.94 -99.99 -99.99 
1987 11 13.39   2.18   7.78 
1987 12  7.64 -99.99 -99.99 
1988 01  3.72  -5.91  -1.09 
1988 02 11.47  -1.40   5.03 
1988 03 16.06   1.24   8.64 
1988 04 20.96   7.03  13.99 
1988 05 27.23  12.98  20.10 
1988 06 34.87  20.26  27.56 
1988 07 38.23  24.06  31.14 
1988 08 35.34  22.41  28.87 
1988 09 29.54  15.93  22.73 
1988 10 27.59  12.25  19.92 
1988 11 15.56   4.91  10.23 
1988 12  9.13  -2.14   3.49 
1989 01  4.98  -5.86   -.43 
1989 02  8.99  -2.08   3.44 
1989 03 19.71   4.96  12.34 
1989 04 25.85  10.42  18.13 
1989 05 29.50  14.80  22.15 
1989 06 33.99  17.82  25.90 
1989 07 38.34  23.10  30.72 
1989 08 34.21  20.85  27.53 
1989 09 31.70  17.28  24.49 
1990 07 36.39  22.94  29.66 
1990 08 34.86  21.68  28.27 
1990 09 31.06  18.19  24.62 
1990 12  5.53 -99.99 -99.99 
1991 02 13.90  -1.00   6.45 
1991 03 14.87   1.81   8.34 
1991 04 19.76   6.03  12.89 
1991 05 26.18  12.10  19.14 
1991 06 32.66  16.54  24.60 
1991 07 39.40 -99.99 -99.99 
1991 08 37.00  18.93  27.97 
1991 10 24.79   8.17  16.48 
1991 11 12.14 -99.99 -99.99 
1992 02 11.62    .66   6.14 
1997 03 18.64   4.12  11.37 
1997 04 18.79   6.13  12.46 
1997 05 29.08  14.91  21.99 
1997 06 33.72  20.69  27.20 
1997 07 36.03  23.01  29.52 
1997 08 34.23  21.43  27.83 
1997 09 29.78  17.35  23.56 
1997 10 21.70 -99.99 -99.99 
1997 11 14.43   3.55   8.99 
1998 01 10.51    . 7   5.29 
1998 02 10.70    .70   5.70 
1998 03 16.23   3.79  10.01 
1998 04 19.54   6.73  13.14 
1998 05 26.53  14.25  20.39 
1998 06 31.21  17.81  24.50 
1998 07 37.73  24.41  31.07 
1998 08 36.68  24.30  30.49 
1998 09 30.39  18.20  24.30 
1998 10 21.19  10.59  15.89 
1998 11 13.50   3.30   8.39 
1998 12  7.32  -2.62   2.35 
1999 01 11.38    .49   5.93 
1999 02 13.36   1.17   7.27 
1999 03 20.19   5.85  13.02 
1999 04 18.19 -99.99 -99.99 
1999 05 26.18  13.04  19.61 
1999 06 32.59  19.21  25.90 
1999 07 36.13  23.28  29.70 
1999 09 29.70  16.14  22.92 
1999 10 25.29   9.55  17.42 
1999 11 17.79   3.18  10.48 
1999 12  9.60  -2.51   3.54 
2000 01 11.07   -.83   5.12 
2000 02 13.24    .76   7.00 
2000 03 15.68 -99.99 -99.99 
2000 04 25.21   8.29  16.75 
2000 05 30.70  16.46  23.58 
2000 06 35.31  21.28  28.29 
2000 07 38.41  24.47  31.44 
2000 08 37.87  24.38  31.12 
2000 09 31.89  18.08  24.98 
2000 10 99.99  11.40 -99.99 
2000 11 10.27   1.54   5.90 
2000 12 10.27    .67   5.47 
2001 01  7.66   -.67   3.49 
2001 02 11.01   1.88   6.44 
2001 03 16.96   6.27  11.62 
2001 04 21.65  10.20  15.92 
2001 05 29.31  16.23  22.77 
2001 06 34.50  20.98  27.74 
2001 07 36.39  24.48  30.43 
2001 08 35.57  23.07  29.32 
2001 09 33.21  19.54  26.38 
2001 10 25.22  12.84  19.02 
2001 11 17.00   6.82  11.91 
2001 12  8.00  -1.00   3.50 
2002 01  8.42  -2.07   3.17 
2002 02 11.48  -1.10   5.18 
2002 03 15.77   2.76   9.26 
2002 04 24.97  11.36  18.16 
2002 05 28.33  14.71  21.52 
2002 06 36.61  22.33  29.47 
2002 07 39.00  25.96  32.48 
2002 08 36.22  23.07  29.64 
2002 09 29.99  17.56  23.77 
2002 10 21.95  10.57  16.26 
2002 11 14.05   3.57   8.81 
2002 12  9.26    .44   4.85 
2003 01 12.00   1.15   6.57 
2003 02 11.71   1.11   6.41 
2003 03 16.59   6.09  11.34 
2003 04 21.65   9.58  15.61 
2003 05 28.59  16.06  22.32 
2003 06 34.96  21.19  28.07 
2003 07 40.24  26.70  33.47 
2003 08 36.66  24.08  30.37 
2003 09 31.67  17.81  24.74 
2003 11 13.41   5.03   9.22 
2004 02  8.77   -.42   4.17 
2004 04 21.61   9.35  15.48 
2004 05 28.41  15.87  22.14 
2004 06 34.72 -99.99 -99.99 
2004 07 37.06  24.40  30.73 
2004 08 35.15  22.70  28.92 
2004 09 30.48  17.20  23.84 
2004 10 21.49  11.27  16.38 
2004 11 12.68   4.12   8.39 
2004 12  8.53 -99.99 -99.99 
2005 01 10.85   2.49   6.67 
2005 02 11.81   3.12   7.46 
2005 03 16.69   5.50  11.09 
2005 04 21.74   9.72  15.73 
2005 05 28.30  15.63  21.96 
2005 06 32.23  18.87  25.55 
2005 07 39.30  25.20  32.25 
2005 08 33.80  22.17  27.98 
2005 09 30.84  18.70  24.77 
2005 10 23.49  12.25  17.86 
2005 12  9.32   -.63   4.34 
2006 01  9.97   -.47   4.75 
2006 02 13.06    .41   6.73 
2006 03 15.02   4.42   9.72 
2006 04 23.15  10.33  16.74 
2006 05 30.58  16.73  23.65 
2006 06 36.38  22.68  29.53 
2006 07 38.23  26.10  32.16 
2006 08 35.18  22.67  28.93 
2006 09 28.47  16.21  22.34 
2006 10 20.37  10.10  15.23 
2007 08 36.91  24.45  30.68 
2008 05 27.49 -99.99 -99.99 
2008 06 34.64 -99.99 -99.99 
2008 07 38.14 -99.99 -99.99 
2008 08 36.56  23.48  30.02 
2008 09 32.00 -99.99 -99.99 
2009 02 12.70  -1.51   5.59 
2009 04 22.58 -99.99 -99.99 
2009 05 30.33 -99.99 -99.99 
2009 07 38.40 -99.99 -99.99 
2009 08 36.20  22.86  29.53 
2009 09 31.42 -99.99 -99.99 
2010 08 33.96 -99.99 -99.99 
2011 01  7.04 -99.99 -99.99 
2011 02 11.18 -99.99 -99.99 
2011 04 24.17 -99.99 -99.99 
2011 05 26.91 -99.99 -99.99 
2011 06 33.75 -99.99 -99.99 
2011 07 37.07 -99.99 -99.99 
2011 08 37.27  24.11  30.69 
2011 09 30.75  18.84  24.79 
2011 10 23.66  11.72  17.69 
2013 07 37.95  25.11  31.53 
2013 08 34.54  22.68  28.61 
2014 01  9.79  -2.27   3.76 
2014 02 15.00   2.54   8.77 
2014 03 18.12   5.72  11.92 
2014 04 21.63   9.12  15.37 
