Year	current US$
1990	36811105.122959
1991	38734029.7292682
1992	39759109.221692
1993	40775565.3085927
1994	42653296.5404693
1995	41581000.6844249
1996	40461453.5429735
1997	39058370.8888992
1998	39897980.407229
1999	38641857.1050169
2000	37752617.788111
2001	37162087.3782249
2002	38950288.1741374
2003	40563617.7692031
2004	44927293.1789081
2005	49615275.7526317
2006	56868580.2115885
2007	62530295.6734228
2008	77367502.3403864
2009	84767101.2917563
2010	91389988.9697626
2011	97158989.8807864
2012	104587046.363981
2013	103648630.345917
2014	111074397.391734
2015	115225160.029125
2016	117165935.294368
2017	116637978.946654
2018	115630217.181018
2019	116711297.961664
2020	116861802.352041
2021	119565601.180384