Year	current US$
1970	1419999.9794363973
1971	1660000.0075995915
1972	2069999.985396861
1973	6880000.030621891
1974	9789999.941363929
1975	11379999.941214914
1976	13869999.796152111
1977	17970000.211149454
1978	23389999.851584442
1979	40340000.031516016
1980	37160000.37640335
1981	33079999.94792044
1982	34169999.90493059
1983	29789999.987930045
1984	31659999.808296572
1985	33610000.23223461
1986	38800000.00447037
1987	47130000.37893652
1988	42640000.108629435
1989	36350000.38519502
1990	42069999.765604705
1991	43310000.40471557
1992	50050000.06593762
1993	46659999.64065851
1994	66060000.080615304
1995	68970000.14036892
1996	59669999.82483685
1997	72390001.3305247
1998	93960001.64747235
1999	60240000.91850754
2000	75340000.81755225
2001	87619999.8091906
2002	139919999.698177
2003	101059999.58515164
2004	104590000.33698967
2005	260699993.1223691
2006	387589994.52367467
2007	214680003.3561887
2008	144419998.7500906
2009	250310000.0414998
2010	229089997.7833033
2011	272620000.9901076
2012	383260000.3592668
2013	147729999.87751248
2014	119409999.14146958
2015	123799998.95393857
2016	139480000.60021877
2017	119100002.44341792
2018	122610001.36658542
2019	125719998.73034656