Year	current US$
1971	1499999.9981373544
1972	4029999.92482364
1973	5980000.022798773
1974	10140000.0769645
1975	16550000.499933982
1976	23019999.846816074
1977	19589999.886229634
1978	19770000.107586388
1979	25819999.59237871
1980	33869999.71233311
1981	37160000.34660097
1982	43330000.076442964
1983	52900000.46417124
1984	61489999.70778813
1985	69430001.79342924
1986	99190000.89168541
1987	141819999.56071377
1988	201390001.3249367
1989	202419999.41319236
1990	214570000.303909
1991	224360000.69230798
1992	160759999.71106637
1993	75479999.61487952
1994	80490000.62607242
1995	75650000.75660649
1996	72639998.74889849
1997	58430000.45605004
1998	62909999.20852478
1999	63169999.52308834
2000	59110000.35516917
2001	65749999.865889594
2002	70999999.93480735
2003	98150000.41574238
2004	119300000.73835255
2005	130729999.18647115
2006	157319999.57002696
2007	189669999.929145
2008	210120002.73168087
2009	245260002.36347324
2010	252099996.61147586
2011	230239999.78788194
2012	228720001.60254553
2013	249220001.34922558
2014	295889997.75424594
2015	189710001.46865854
2016	138379998.9130349
2017	125760000.10408457
2018	93770000.89734788
2019	126249998.42792748
2020	142209999.82766807
2021	146999999.78579584
2022	130189998.71425334