Year	current US$
1970	3700000.131502743
1971	1909999.9926984315
1972	2509999.938309194
1973	4199999.969452624
1974	3420000.005513429
1975	3960000.012069936
1976	6230000.048875806
1977	10909999.968484048
1978	14050000.047311196
1979	12529999.900609246
1980	15249999.843537819
1981	17350000.22500755
1982	21389999.741688367
1983	28690000.137314197
1984	35730000.09916721
1985	38719999.63745475
1986	57339999.43919477
1987	55209999.55199652
1988	60230000.31150882
1989	64069999.96304516
1990	70679999.68491505
1991	100130000.12934202
1992	88169999.73729253
1993	68730000.19043681
1994	60210000.78320506
1995	76910000.07838005
1996	62670000.31098724
1997	64500000.61839816
1998	59709999.77365136
1999	58759999.20070168
2000	55100000.29765069
2001	50610000.142827645
2002	72769999.66241418
2003	88230000.53688876
2004	90169999.41691764
2005	158619997.4045157
2006	147800001.55791646
2007	157540001.77979463
2008	105489999.51034796
2009	274320002.2801754
2010	156730000.08426622
2011	226919994.90186572
2012	191090000.83245337
2013	185549997.97791237
2014	204950000.2600254
2015	208609999.75167203
2016	195300004.72813857
2017	204589999.31626016
2018	219380000.91165295
2019	216580001.3374537