Year	current US$
1970	5978710003.31752
1971	6524438787.79493
1972	7268399177.9889
1973	8748666173.36419
1974	10340572121.4136
1975	10954817514.0219
1976	12993421797.3827
1977	16898080791.6414
1978	20444141830.6661
1979	24356406229.4069
1980	29214857550.7445
1981	31676991867.7072
1982	33672610233.18
1983	32752080120.1887
1984	31913345567.0158
1985	28715702797.8644
1986	29015239195.7976
1987	29347607076.1776
1988	32418894404.9591
1989	31477526173.7827
1990	38203405816.343
1991	40577368439.1609
1992	49000488817.0425
1993	56732591877.835
1994	70704521942.591
1995	79316283104.6969
1996	81835477652.0455
1997	89970895697.6191
1998	83567749612.0533
1999	70745000902.2282
2000	80676248012.073
2001	80848533572.4427
2002	80363596320.8879
2003	76581149753.1801
2004	94000508683.2615
2005	117846441522.982
2006	129721375803.8
2007	166614705371.523
2008	191531744796.542
2009	189525646540.142
2010	229344432974.589
2011	258040384306.35
2012	289550984274.619
2013	302219653422.262
2014	306775923849.17
2015	247102690753.018
2016	240548650516.569
2017	262151103833.833
2018	276036495061.459
2019	269080606726.016
2020	233191071765.861
2021	262457593210.728