Year	current US$
1999	34008363910.382214
2000	30782022598.734516
2001	31193856381.84452
2002	31922190286.589245
2003	35993995986.10425
2004	43427362499.73343
2005	50056783496.87044
2006	55074674011.26595
2007	65121233795.86197
2008	73593088722.63907
2009	67337652509.44166
2010	74539556794.10764
2011	86923828481.48357
2012	87480269435.80626
2013	95280529680.77498
2014	97199057345.57278
2015	84697477225.55455
2016	86178588811.99377
2017	96685103018.20918
2018	105184792535.57343
2019	104825131680.98212