1987 09 10.71 -99.99 -99.99 
1990 04  6.23 -99.99 -99.99 
1990 05  9.34 -99.99 -99.99 
1990 06 12.90 -99.99 -99.99 
1990 07 17.10 -99.99 -99.99 
1990 09 10.12 -99.99 -99.99 
1991 09 10.63 -99.99 -99.99 
1998 09 10.75   6.27   8.51 
1998 12 -5.82 -10.34  -8.08 
1999 01 10.97 -15.66 -13.31 
1999 02 -8.97 -14.32 -11.64 
1999 06 16.89   9.51  13.20 
1999 07 17.83  12.21  15.02 
1999 10  6.27   3.40   4.83 
1999 11 -1.75  -5.76  -3.75 
2000 01 -7.05 -12.20  -9.62 
2000 02 -4.96 -10.94  -7.95 
2005 12 -4.29  -9.56  -6.92 
2006 02 10.51 -16.54 -13.53 
2006 03 -5.55 -12.98  -9.26 
2006 04  2.93  -1.25    .84 
2006 05  8.43   2.87   5.65 
2006 06 17.27  10.63  13.95 
2006 07 15.04  10.33  12.68 
2007 07 14.90   9.75  12.32 
2009 03 -3.40  -9.37  -6.38 
2009 04   .37  -6.92  -3.27 
2009 05  7.28    .55   3.91 
2009 06 14.88   6.60  10.74 
2009 07 17.84   9.64  13.74 
2009 08 15.36   7.67  11.51 
2009 09 13.00   8.09  10.54 
2009 10  2.01   -.97    .52 
2009 11 -2.42  -5.20  -3.81 
2009 12 11.38 -17.81 -14.59 
2010 01 14.31 -19.87 -17.09 
2010 02 13.19 -19.62 -16.40 
2010 03 -5.00 -11.72  -8.36 
2010 04  4.46  -1.67   1.39 
2010 05 14.41   4.46   9.43 
2010 06 13.64   5.78   9.71 
2010 07 22.76  11.77  17.26 
2010 08 15.58   8.32  11.95 
2010 09  9.59   5.50   7.54 
2010 10  4.36    .58   2.47 
2010 11 -5.85  -9.64  -7.74 
2010 12 10.81 -16.82 -13.81 
2011 01 13.22 -18.01 -15.61 
2011 02 17.20 -24.72 -20.96 
2011 03 -1.58  -8.32  -4.94 
2011 04  3.58  -1.28   1.15 
2011 05 11.69   2.79   7.24 
2011 06 16.82   7.09  11.95 
2011 07 21.77  11.62  16.69 
2011 08 15.63   6.39  11.01 
2011 09 11.87   5.54   8.70 
2011 10  5.27   2.00   3.63 
2011 11  -.63  -4.89  -2.76 
2011 12 -1.23  -3.52  -2.37 
2012 01 -9.25 -13.98 -11.61 
2012 02 12.57 -17.42 -14.99 
2012 03 -4.91 -15.64 -10.27 
2012 04  3.00  -3.99   -.49 
2012 05 11.88   2.13   7.00 
2012 06 16.07   8.14  12.10 
2012 07 19.64   9.81  14.72 
2012 08 14.82   8.18  11.50 
2012 09 13.26   7.86  10.56 
2012 10 99.99   1.60 -99.99 
2012 11 99.99  -2.16 -99.99 
2012 12 99.99 -16.03 -99.99 
2013 01 99.99 -10.59 -99.99 
2013 02 99.99  -7.98 -99.99 
2013 03 -6.80 -17.36 -12.08 
2013 04  4.48  -3.96    .26 
2013 05 12.02   3.92   7.97 
2013 06 18.14  10.02  14.08 
2013 07 19.60  12.36  15.98 
2013 08 99.99  11.33 -99.99 
2013 09 99.99   7.56 -99.99 
2013 10 99.99    .70 -99.99 
2013 12 99.99  -5.50 -99.99 
