2008 06 13.83 -99.99 -99.99 
2008 07 15.64  10.00  12.82 
2008 08 16.45  11.10  13.78 
2008 09 14.78   8.79  11.78 
2008 10 10.29   4.77   7.53 
2008 11  7.31   2.73   5.02 
2009 01  4.36  -1.57   1.39 
2009 02  3.19  -2.10    .54 
2009 03  3.68   -.86   1.41 
2009 04  8.66   1.76   5.21 
2009 05 13.15   5.59   9.37 
2009 06 17.26   9.53  13.39 
2009 07 19.91  12.67  16.29 
2009 08 18.65  11.95  15.29 
2009 09 14.67   9.26  11.96 
2009 11  6.48   2.29   4.38 
2009 12  2.68  -1.73    .47 
2010 01  6.28   2.52   4.40 
2010 02  6.69   1.60   4.14 
2010 03  6.22   1.69   3.95 
2010 04  9.43   2.89   6.16 
2010 05 13.87   6.27  10.07 
2010 06 16.79   9.10  12.94 
2010 07 17.25  11.05  14.15 
2010 09 15.76   8.50  12.13 
2011 01  3.23  -1.09   1.06 
2011 05 12.35   5.88   9.11 
2011 06 15.31   9.35  12.33 
2011 07 16.40  10.54  13.46 
2011 09 15.45   8.79  12.12 
