Year	current US$
1970	1430000.0127404928
1971	1870000.0494718594
1972	1370000.027120113
1973	3689999.8933076905
1974	6800000.250339508
1975	8609999.755397448
1976	9869999.889284372
1977	15139999.942854049
1978	22680000.06675721
1979	29260000.357404344
1980	33689999.84674151
1981	31889999.628067005
1982	42610000.500455484
1983	38659999.975934625
1984	29229999.084025625
1985	33729999.531060465
1986	40200000.025331974
1987	48669999.886304125
1988	55050000.45895571
1989	67549999.75115058
1990	65580000.51975254
1991	60600001.513957925
1992	73399999.55892563
1993	55839999.601244986
1994	65520000.7557869
1995	61229999.452829346
1996	60590000.10788433
1997	57030000.03099443
1998	52809999.71926211
1999	51010000.169277176
2000	54300000.57816504
2001	67140000.25391583
2002	77780001.28269203
2003	139000002.8014183
2004	182600002.34842256
2005	224160004.19855133
2006	240199998.91519517
2007	299210008.26358825
2008	296379995.8527092
2009	298829997.89714813
2010	455439998.0306626
2011	501380007.3862077
2012	522010000.7057186
2013	441369994.4019319
2014	350880004.16755646
2015	365600004.19616693
2016	294889999.7472766
2017	343729995.48912024
2018	309760002.1958351
2019	302780000.686646
2020	285940001.72615063
2021	559379994.6308128
2022	403490000.2479552