Year	current US$
1970	10675141.8898283
1971	9518457.61942403
1972	10981737.7114315
1973	18588888.4312223
1974	20671608.4939839
1975	28339141.2509005
1976	25850735.2714118
1977	46533705.0674897
1978	46839937.4662022
1979	45017565.3535047
1980	52604557.4808052
1981	47982240.7433397
1982	69990437.2855209
1983	47191178.5333065
1984	43332857.2727154
1985	32040188.8458539
1986	52316233.5097615
1987	52205067.9354137
1988	57993776.6079879
1989	60036680.7959974
1990	76209685.7764672
1991	78050349.6890155
1992	82570127.3446458
1993	72204329.4207156
1994	87144285.2934149
1995	132656730.178862
1996	132706586.440649
1997	129793902.066981
1998	133996953.274974
1999	87681142.7150037
2000	87484375.7634939
2001	83977748.4638698
2002	103217592.286614
2003	179787346.597949
2004	129888080.064875
2005	132508560.54112
2006	125475507.704409
2007	179198541.11262
2008	203556802.837351
2009	203134406.087961
2010	172162805.493304
2011	187851884.608558
2012	214461190.952793
2013	211644666.585939
2014	221101579.008142
2015	213246490.646556
2016	250403445.026704
2017	271599382.08986
2018	193380908.478154
2019	201979680.720221
2020	236937966.417285
2021	251014752.135581