1987 09  8.88 -99.99 -99.99 
1990 05  4.55 -99.99 -99.99 
1991 06 13.03 -99.99 -99.99 
1991 08 14.32 -99.99 -99.99 
1993 06 12.22 -99.99 -99.99 
1993 09  6.47 -99.99 -99.99 
1994 08 15.08 -99.99 -99.99 
1994 09  9.71 -99.99 -99.99 
1995 05  8.55 -99.99 -99.99 
1995 08 13.66 -99.99 -99.99 
1995 09 11.24 -99.99 -99.99 
1996 08 15.04 -99.99 -99.99 
1996 09  8.56 -99.99 -99.99 
1997 07 10.75 -99.99 -99.99 
1997 10  3.91 -99.99 -99.99 
1998 05 99.99  -2.31 -99.99 
1999 09 10.76 -99.99 -99.99 
1999 10  6.73 -99.99 -99.99 
2001 09 99.99   7.81 -99.99 
2002 04  -.73  -6.65  -3.69 
2002 08 11.46   7.01   9.23 
2002 09  7.72   3.20   5.46 
2002 10  1.53  -2.38   -.42 
2002 11 -5.81 -10.05  -7.93 
2003 11   .52  -2.66  -1.06 
2004 04  -.94  -6.14  -3.54 
2004 07 15.80  10.37  13.08 
2004 08 12.26   7.90  10.08 
2004 12 -3.89  -7.02  -5.45 
2006 03 -6.87 -13.33 -10.10 
2006 04   .61  -3.06  -1.22 
2006 05  5.85    .20   3.02 
2006 06 11.99   6.01   9.00 
2006 07 12.15   7.60   9.87 
2006 08 12.97   7.34  10.15 
2006 09  9.33   4.64   6.98 
2006 10  2.22  -1.43    .39 
2006 11 -1.32  -3.98  -2.65 
2006 12 -1.77  -5.02  -3.39 
2007 01 -4.10  -7.87  -5.98 
2007 02 11.84 -16.53 -14.18 
2007 03   .52  -5.06  -2.26 
2007 04  1.03  -4.76  -1.86 
2007 05  4.86    .-5   2.40 
2007 06  9.72   4.48   7.10 
2007 07 14.08   8.84  11.46 
2007 08 14.78   8.62  11.70 
2007 10  6.57   3.89   5.23 
2007 11  -.85  -3.68  -2.26 
2007 12   .15  -3.53  -1.69 
2008 01 -3.22  -6.96  -5.09 
2008 02 -4.46  -9.06  -6.76 
2008 03 -5.47 -10.98  -8.22 
2008 04 -1.02  -6.39  -3.70 
2008 05  2.25  -1.65    .30 
2008 06 10.18   4.86   7.52 
2008 07 12.65   8.49  10.57 
2008 08 10.61   6.74   8.67 
2008 09  7.94   3.56   5.75 
2008 10  5.33   2.76   4.04 
2008 11   .22  -2.79  -1.28 
2008 12  -.52  -3.43  -1.97 
2009 01 -6.68 -10.88  -8.78 
2009 02 -7.74 -13.32 -10.53 
2009 03 -4.16  -8.84  -6.50 
2009 04  -.70  -6.25  -3.47 
2009 06 10.72   4.92   7.82 
2009 07 13.06   7.87  10.46 
2009 08 11.65   6.54   9.09 
2009 09 10.32   6.21   8.26 
2009 10  3.12   -.97   1.07 
2009 11   . 3  -2.03  -1.00 
2009 12 -6.11 -10.02  -8.06 
2010 01 -9.82 -14.97 -12.39 
2010 02 11.16 -17.33 -14.24 
2010 03 -5.79 -12.94  -9.36 
2010 04  1.23  -3.17   -.97 
2010 05  7.32   1.60   4.46 
2010 06 10.10   4.36   7.23 
2010 07 15.22   9.58  12.40 
2010 08 12.39   6.48   9.43 
2010 09  9.29   5.76   7.52 
2010 10  5.54   1.66   3.60 
2010 11 -2.61  -6.34  -4.47 
2010 12 -7.03 -11.80  -9.41 
2011 01 -9.64 -14.70 -12.17 
2011 02 12.63 -18.27 -15.45 
2011 03 -2.96  -9.68  -6.32 
2011 04  1.56  -2.81   -.62 
2011 05  5.92    .98   3.45 
2011 06 11.60   4.91   8.25 
2011 07 14.83   9.27  12.05 
2011 08 12.48   6.51   9.49 
2011 09 11.04   5.95   8.49 
2011 10  6.26   2.84   4.55 
2011 11   .66  -2.78  -1.05 
2011 12   .65  -1.68   -.51 
2012 01 -4.69  -7.71  -6.20 
2012 02 -8.02 -11.77  -9.89 
2012 10  4.87   1.54   3.20 
2013 04  1.49  -4.48  -1.49 
2013 06 15.10   7.68  11.39 
