Year	current US$
1970	166100000.47087666
1971	162499998.7632036
1972	234969999.19414517
1973	263919998.76499173
1974	362659999.4897842
1975	436010003.32832325
1976	438769996.40464765
1977	402759999.71479183
1978	491429999.29189676
1979	609100003.8571655
1980	847499998.1373549
1981	833609994.5306782
1982	810409996.7479708
1983	744739998.668432
1984	843269986.0930438
1985	819049998.9390376
1986	1105219999.4921682
1987	1363560006.916524
1988	1495199989.5665805
1989	1720139993.3397765
1990	2419409997.8804593
1991	2199700004.7937036
1992	2479499972.3732476
1993	2483049993.9620485
1994	2492479974.9851227
1995	2154889964.628965
1996	1805169986.7099533
1997	1725640001.5912945
1998	1185870009.5713134
1999	1165200006.5129251
2000	1006640002.5151669
2001	759040002.8228762
2002	1732719984.7698212
2003	2625859995.8121767
2004	2567249990.522862
2005	2024039995.4915047
2006	1770679993.7337632
2007	1977629986.9418135
2008	1754660011.6975605
2009	2446400066.1671166
2010	2543120017.796756
2011	2875620060.503483
2012	2612070013.398305
2013	1398939998.004586
2014	1466959983.2817917
2015	1214769999.9716134
2016	1130950001.8022952
2017	1402080002.9039388
2018	1833530028.4326088
2019	2111839985.4078896
2020	2446000009.89437
2021	2340730024.129152
2022	2551360030.829906