2007 03 99.99 -99.99  26.60 
2007 04 99.99 -99.99  27.30 
2007 05 99.99 -99.99  28.00 
2007 06 99.99 -99.99  28.40 
2007 07 99.99 -99.99  28.50 
2007 08 99.99 -99.99  28.20 
2007 09 99.99 -99.99  28.30 
2007 10 99.99 -99.99  27.90 
2007 11 99.99 -99.99  27.50 
2007 12 99.99 -99.99  26.80 
2008 01 99.99 -99.99  25.80 
2008 02 99.99 -99.99  25.50 
2008 03 99.99 -99.99  25.20 
2008 04 99.99 -99.99  26.10 
2008 05 99.99 -99.99  26.90 
2008 06 99.99 -99.99  28.10 
2008 07 99.99 -99.99  28.40 
2008 08 99.99 -99.99  28.90 
2008 09 99.99 -99.99  28.20 
2008 10 99.99 -99.99  28.10 
2008 11 99.99 -99.99  27.40 
2008 12 99.99 -99.99  26.20 
2009 01 99.99 -99.99  25.90 
2009 02 99.99 -99.99  25.40 
2009 03 99.99 -99.99  25.30 
2009 04 99.99 -99.99  26.10 
2009 05 99.99 -99.99  27.20 
2009 06 99.99 -99.99  28.00 
2009 07 99.99 -99.99  28.50 
2009 08 99.99 -99.99  28.80 
2009 09 99.99 -99.99  28.60 
2009 10 99.99 -99.99  28.60 
2009 11 99.99 -99.99  28.00 
2009 12 99.99 -99.99  27.20 
2010 01 99.99 -99.99  26.70 
2010 02 99.99 -99.99  26.80 
2010 03 99.99 -99.99  27.70 
2010 04 99.99 -99.99  27.50 
2010 05 99.99 -99.99  28.30 
2010 06 99.99 -99.99  28.80 
