Year	current US$
1990	72463241.9639117
1991	52005569.2470166
1992	29738989.28634
1993	28885368.4109505
1994	30312429.6267889
1995	29504182.5645941
1996	30879566.570969
1997	24337467.6933073
1998	30643278.2720048
1999	52720492.2970399
2000	58840307.6878379
2001	62684096.1579774
2002	75774384.6725154
2003	85522436.9277438
2004	93765352.4538279
2005	93762977.2035455
2006	98340398.827004
2007	106618443.827746
2008	109497975.845026
2009	116545747.080729
2010	127173174.093082
2011	144667674.423847
2012	135465415.783869
2013	143524715.911265
2014	162293054.31232
2015	160650419.586215
2016	160883763.874984
2017	192323852.103199
2018	200203395.467345
2019	196962184.237353
2020	194423596.138357
2021	222562876.30591