2007 12 99.99 -99.99  12.80 
2008 02 99.99 -99.99  13.10 
2008 04 99.99 -99.99  22.90 
2008 06 99.99 -99.99  28.30 
2008 07 99.99 -99.99  30.70 
2008 09 99.99 -99.99  28.80 
2008 10 99.99 -99.99  23.70 
2008 11 99.99 -99.99  19.40 
2008 12 99.99 -99.99  13.40 
2009 01 99.99 -99.99  14.00 
2009 03 99.99 -99.99  17.20 
2009 04 99.99 -99.99  21.00 
2009 05 99.99 -99.99  24.70 
2009 06 99.99 -99.99  28.60 
2009 07 99.99 -99.99  30.10 
2009 10 99.99 -99.99  22.30 
2009 12 99.99 -99.99  15.60 
2010 02 99.99 -99.99  17.90 
2010 03 99.99 -99.99  19.90 
2010 04 99.99 -99.99  17.90 
2010 06 99.99 -99.99  30.10 
2010 08 99.99 -99.99  29.30 
2010 09 99.99 -99.99  27.80 
2010 10 99.99 -99.99  24.10 
2010 11 99.99 -99.99  20.20 
2010 12 99.99 -99.99  14.90 
2011 01 99.99 -99.99  13.30 
