Year	current US$
1970	2080628.11874704
1971	2422178.38761867
1972	2885266.19737524
1973	3831811.98512276
1974	4479638.44847042
1975	5689790.97385947
1976	6292662.26936109
1977	7008595.97810873
1978	10089689.2902814
1979	11619878.9929003
1980	12347794.9373345
1981	11815660.897438
1982	12056557.6850905
1983	12101444.5333487
1984	11606870.3375346
1985	12217945.9638397
1986	17997768.0664715
1987	24313161.1127928
1988	26828303.1125027
1989	25864020.1367853
1990	32825716.9549171
1991	34273309.846683
1992	37669019.8615574
1993	38636762.0758262
1994	44987614.947105
1995	56080112.3394204
1996	57825282.3976547
1997	53076861.8562689
1998	57263850.2025743
1999	60516643.6791246
2000	57203590.3392137
2001	52651527.0686977
2002	55749140.0221454
2003	61724589.0692951
2004	67149505.2917284
2005	73444559.4637132
2006	82390528.1480078
2007	88399708.2253448
2008	104086541.71612
2009	98251719.149879
2010	120037655.013735
2011	138789432.435463
2012	116603916.14658
2013	156497121.69782
2014	164561534.117864
2015	158084048.427749
2016	183301018.305497
2017	206658389.710191
2018	211828078.613184
2019	191966261.00902