Year	current US$
1999	18959404120.610374
2000	18141400125.049507
2001	26137738148.12535
2002	27488199955.071354
2003	31597400218.812656
2004	37977341293.30036
2005	42308463466.80021
2006	47226934187.45156
2007	56586061386.24149
2008	71384300463.9006
2009	69352582762.85307
2010	77518556150.55864
2011	97488063918.71834
2012	102013650000.65067
2013	107485031826.2684
2014	114462143413.83688
2015	97703744071.25578
2016	94709388946.49216
2017	97261057613.67198
2018	96160780155.43057
2019	97658571686.65219
2020	87060069350.22812
2021	90308911896.84328
2022	96438187337.26315
2023	108093090863.9907