Year	current US$
1970	22649999.160319567
1971	25019999.532029003
1972	30420000.37990508
1973	24260000.52317975
1974	42900000.75660651
1975	47889998.76752499
1976	101869996.9518928
1977	92449997.54801399
1978	84010000.45612457
1979	119840001.2105703
1980	112709996.39667568
1981	103430002.98179682
1982	108420003.38062644
1983	12459999.701008199
1984	9839999.86387789
1985	6040000.0549852885
1986	5999999.834224585
1987	14780000.28431416
1988	20269999.423995636
1989	55339998.73884025
1990	74000001.21630736
1991	24390000.600367762
1992	63920000.96663829
1993	75379996.96657063
1994	61430000.27909877
1995	74849999.73140658
1996	103230001.45703554
1997	67370000.39778651
1998	40200000.93244012
1999	23030000.6866455
2000	21410000.18827618
2001	20490000.484511282
2002	9900000.138208274
2003	-1409999.9535828833
2004	22140000.028535724
2005	25580000.737682026
2006	31319999.217987005
2007	118790000.915527
2008	62330001.8310547
2009	111260002.13623
2010	73360002.99453734
2011	47009998.142719254
2012	2609999.8950958303
2013	1860000.0143051099
2014	3829999.8044967605
2015	4589999.79496002
2016	2780000.09059906
2017	-289999.96185303
2018	2539999.9022483807
2019	3759999.930858611
2020	4609999.885782598
2021	2539999.9059736747
2022	1020000.0442564446