Year January February March April May June 2005           42.5 2006 126.15 155.81 199.04 83.41 94.42 253.16 2007 156.04 173.27 207.91 112.63 131.71 229.81 2008 197.28 208.53 194.04 135.52 111.66 126.61 2009 172.42 181.54 236.22 215.62 192.06 288.06 2010 308.36 297.69 …