Year	current US$
1970	8293320.23735751
1971	9658391.78775497
1972	10852381.6518254
1973	17964532.622033
1974	38283844.2243347
1975	54122733.5433297
1976	76429220.4366153
1977	71764174.9147076
1978	58389797.5730403
1979	72056137.2742372
1980	104112771.144912
1981	95428040.2826338
1982	89231412.2420836
1983	83600470.7549639
1984	90109850.8906214
1985	83602929.9487234
1986	85239956.054454
1987	82050249.7818549
1988	96034819.8435468
1989	106702239.579403
1990	144081430.049647
1991	130929186.772816
1992	131338107.187302
1993	100064805.711759
1994	98656378.762645
1995	114702543.831316
1996	131735800.542249
1997	123168696.947315
1998	134922317.284226
1999	125278755.303881
2000	131574252.331711
2001	134442675.338822
2002	148545726.96613
2003	177393359.239066
2004	201252832.907926
2005	263919213.804844
2006	274389534.892624
2007	325112081.744348
2008	410244800.44843
2009	328529606.836924
2010	382024594.116988
2011	480763466.666894
2012	472983330.989902
2013	486263744.77918
2014	528041259.833686
2015	403574796.849826
2016	395807184.557892
2017	427963330.274807
2018	482102190.084335
2019	474640695.374938
2020	443802596.835557
2021	521801340.915591