Year constant 2011 international $ 2001 800.24884954586 2002 970.118254451373 2003 1017.02293990603 2004 1034.63884922504 2005 1039.69363704955 2006 1052.85072659586 2007 1183.97439171664 2008 1251.36212016908 2009 1274.84906688516 2010 1221.85091503596 2011 1237.89924234423 2012 1459.94799693813 2013 1660.64731432286 2014 1672.98343829836 2015 1308.68479063982 2016 1228.0009453331 2017 1360.41452025242