Year	current US$
1974	450000.0122934583
1975	239999.99836087244
1976	639999.9912828213
1977	950000.0104308123
1978	2660000.0206381106
1979	4289999.922737477
1980	6219999.870285392
1981	6920000.122860067
1982	8359999.889507888
1983	9140000.015497211
1984	8829999.927431343
1985	11320000.143721696
1986	14539999.907836322
1987	16679999.649524674
1988	14980000.007897627
1989	12490000.09149313
1990	16949999.98807907
1991	21680000.400170684
1992	20989999.873563655
1993	29089999.93838371
1994	41969999.3878603
1995	71039999.92832541
1996	91759999.34040007
1997	102280000.63821681
1998	98729999.12500389
1999	103990000.7471442
2000	121219999.98018155
2001	146879999.93562698
2002	221309999.33183187
2003	285860005.0769746
2004	330549997.5346029
2005	377379999.67858195
2006	466090004.10512084
2007	603499997.4407254
2008	677040000.5858393
2009	507439998.1349708
2010	458979999.9501557
2011	461850001.27926475
2012	402719997.0595537
2013	401240002.7755647
2014	397040001.15953386
2015	322109999.7218698
2016	311349999.7667968
2017	322279997.9820847
2018	329029998.16276115
2019	322989999.4973093
2020	330480001.45331013
2021	348170001.68189394
2022	407639998.53469425