Year	current US$
1973	992960000
1974	1088940000
1975	1319820000
1976	940490000
1977	1124850000
1978	1502070000
1979	1927660000
1980	2610560000
1981	2651370000
1982	2418480000
1983	2291080000
1984	2692780000
1985	2526170000
1986	2550350000
1987	2730310000
1988	3034050000
1989	3617636759
1990	3656091237
1991	3421020535
1992	3730840748
1993	4014526982
1994	4583959904
1995	6496050750
1996	6934925231
1997	6996101124
1998	7370225604
1999	8352443082
2000	8861116200
2001	8997260881
2002	7839863766
2003	9816541851
2004	11572464505
2005	13836362114
2006	16080326489
2007	18466401723
2008	23832899738
2009	21819301917
2010	27771160757
2011	36148056146
2012	34159373194
2013	37477383165
2014	41635060906
2015	39412978351
2016	41248199915
2017	47751479069
2018	55318924583
2019	55095294344
2020	45857952196