Year	current US$
1970	1969999.9932199703
1971	2249999.996274709
1972	3529999.947175388
1973	7040000.017732379
1974	8830000.048503287
1975	8700000.012293458
1976	7869999.96565282
1977	8440000.025555497
1978	23570000.104606148
1979	22059999.922290433
1980	33240000.100806322
1981	30089999.59565699
1982	39010000.32946467
1983	45450000.5487353
1984	50720000.360161066
1985	53040000.07919966
1986	81559999.68200928
1987	88469999.15130445
1988	98610000.23782253
1989	84189997.93566763
1990	135289998.69339183
1991	128300000.01750877
1992	132389999.43435182
1993	111699998.5929579
1994	133050001.36978924
1995	141720001.7757714
1996	130260000.6610154
1997	96250000.19557779
1998	91759999.80047336
1999	85940000.12986362
2000	79850000.12814999
2001	81290001.55627728
2002	84879999.66740605
2003	131909999.23646455
2004	124129998.84970495
2005	112840000.8529425
2006	113860000.16145407
2007	117020000.08523461
2008	129750000.58114526
2009	137609999.22826892
2010	136600000.36656862
2011	194170001.26838663
2012	198659999.62389478
2013	216279999.99001625
2014	222119999.1293252
2015	246790003.99261716
2016	206440000.02741814
2017	219559998.17699188
2018	217190000.37387013
2019	221299997.5066632