1988 12 99.99 -18.71 -99.99 
1989 01 22.49 -99.99 -99.99 
1989 02 -1.94  -8.33  -5.13 
1989 03 -5.94 -99.99 -99.99 
1989 05  5.30 -99.99 -99.99 
1989 06 14.83   8.22  11.52 
1989 07 15.54 -99.99 -99.99 
1989 08 14.76 -99.99 -99.99 
1989 09 12.05   5.20   8.62 
1989 10   .69  -5.53  -2.42 
1989 11 11.45 -17.95 -14.70 
1989 12 -8.10 -13.96 -11.03 
1990 01 13.79 -20.06 -16.92 
2004 05 10.44   3.18   6.81 
2004 06 20.61  11.38  15.99 
2004 07 20.64  12.64  16.64 
2004 08 16.93  11.71  14.32 
2004 09  4.83   -.78   2.02 
2004 10 -1.04  -4.65  -2.85 
2004 11 10.48 -14.31 -12.39 
2005 02 12.17 -18.08 -15.12 
2005 03 -6.78 -11.86  -9.32 
2005 04 -4.29 -12.40  -8.34 
2005 05 12.29   3.79   8.04 
2005 06 17.67   8.79  13.23 
2005 08 16.56   9.75  13.15 
2005 09  7.36   3.24   5.30 
2005 10 -1.69  -5.55  -3.62 
2005 11 16.14 -20.32 -18.23 
2005 12 -9.89 -14.17 -12.03 
2006 01 19.19 -24.01 -21.60 
2006 02 -9.72 -15.89 -12.81 
2006 03 15.48 -21.74 -18.61 
2006 04 -6.79 -14.57 -10.68 
2006 05  9.58    .52   5.05 
2006 07 15.32   8.71  12.01 
2006 08 13.20   5.79   9.49 
2006 09 10.57   5.15   7.85 
2006 10   .26  -3.51  -1.62 
2007 02 12.92 -17.14 -15.03 
2007 03 18.11 -25.17 -21.64 
2007 04  4.21  -3.57    .32 
2007 05  9.56   -.39   4.58 
2007 06 17.99   8.59  13.29 
2007 07 21.22  11.74  16.48 
2007 08 18.49  10.63  14.56 
2007 09  9.01   4.00   6.50 
2008 02 15.72 -22.54 -19.13 
2008 03 -8.79 -14.73 -11.76 
2008 04 -4.44 -11.84  -8.14 
2008 05  8.64    .93   4.78 
2008 06 15.30   5.96  10.63 
2008 07 16.29   8.47  12.38 
2008 08 14.16   6.75  10.45 
2008 09  9.68   3.42   6.55 
2008 10 -6.91 -11.97  -9.44 
2008 11 12.31 -16.12 -14.21 
2008 12 13.33 -17.37 -15.35 
2009 01 17.20 -22.57 -19.89 
2009 03 12.79 -19.00 -15.89 
2009 04 -2.13  -9.95  -6.04 
2009 05  7.71   -.46   3.62 
2009 06 15.93   7.10  11.51 
2009 07 20.57  11.54  16.05 
2009 08 12.65   5.28   8.96 
2009 09  8.55   2.57   5.56 
2009 10   .52  -3.40  -1.43 
2009 12 -9.71 -14.84 -12.27 
2010 01 16.95 -21.52 -19.24 
2010 02 -9.80 -14.75 -12.27 
2010 03 13.00 -20.48 -16.74 
2010 04   .26  -7.58  -3.66 
2010 05 10.47   1.07   5.77 
2010 06 16.14   6.39  11.26 
2010 07 15.27   7.54  11.40 
2010 08 14.77   7.86  11.31 
2010 09 10.10   3.27   6.68 
2010 10 -1.55  -5.47  -3.50 
2011 01 12.39 -18.15 -15.27 
2011 02 13.49 -20.37 -16.93 
2011 03 -8.42 -14.31 -11.36 
2011 04 -2.69 -10.41  -6.55 
2011 05  9.70    .52   5.11 
2011 06 17.36   8.06  12.71 
2011 07 15.76   7.82  11.79 
2011 08 13.62   6.28   9.95 
2011 09  9.10   3.83   6.46 
2012 02 11.76 -17.15 -14.45 
2012 03 13.70 -21.24 -17.46 
2012 04   .37  -7.50  -3.56 
2012 07 16.06   8.57  12.31 
2012 08 12.78   7.02   9.89 
2012 09  6.11   1.17   3.64 
2012 10 -1.99  -6.64  -4.31 
2012 11 10.73 -15.04 -12.88 
2012 12 17.23 -21.38 -19.30 
2013 01 11.70 -15.52 -13.61 
2013 02 14.57 -20.54 -17.55 
2013 03 11.23 -18.62 -14.92 
2013 04 -4.78 -13.42  -9.10 
2013 05  4.44  -4.83   -.19 
2013 06 20.18  10.04  15.11 
2013 07 17.31   9.60  13.45 
2013 08 15.11   7.81  11.46 
2013 09  5.34   -.24   2.55 
2013 10  1.99   -.88    .55 
2013 11 -9.64 -14.62 -12.13 
2014 02 11.60 -16.66 -14.13 
2014 03 -5.40 -12.58  -8.99 
2014 04  1.46  -6.08  -2.31 
