Year constant 2010 US$ 2004 691.643316220884 2005 606.967486805645 2006 705.443094236409 2007 624.806781073371 2008 634.820838695028 2009 685.502800014605 2010 780.075338086934 2011 769.307611913054 2012 815.511603048395 2013 820.6560372578