Year	constant 2011 international $
1997	65219.8250661278
1998	69393.4824158217
1999	74786.2650256555
2000	75557.2496488726
2001	78748.2114163981
2002	77999.1219237688
2003	79927.7819865707
2004	82502.3278904945
2005	83360.571605161
2006	85478.567535191
2007	90467.6698798095
2008	90839.5079625627
2009	78207.9887726788
2010	73580.880517438
2011	65725.5675212026
2012	59923.9091485151
2013	57306.9477392677
2014	56110.3390836644
2015	55897.3248629883
2016	56731.4869951007
2017	57296.8642567228