2008 01 99.99 -99.99  23.80 
2008 02 99.99 -99.99  21.10 
2008 03 99.99 -99.99  22.70 
2008 04 99.99 -99.99  21.90 
2008 05 99.99 -99.99  19.90 
2008 06 99.99 -99.99  18.29 
2008 07 99.99 -99.99  17.20 
2008 08 99.99 -99.99  18.29 
2008 09 99.99 -99.99  20.50 
2008 10 99.99 -99.99  21.20 
2008 11 99.99 -99.99  23.30 
2008 12 99.99 -99.99  23.40 
2009 01 99.99 -99.99  24.30 
2009 02 99.99 -99.99  23.30 
2009 03 99.99 -99.99  24.00 
2009 04 99.99 -99.99  22.20 
2009 05 99.99 -99.99  22.10 
2009 06 99.99 -99.99  19.50 
2009 07 99.99 -99.99  17.50 
2009 08 99.99 -99.99  19.00 
2009 09 99.99 -99.99  20.10 
2009 10 99.99 -99.99  21.70 
2009 11 99.99 -99.99  23.50 
2009 12 99.99 -99.99  24.50 
