Year	current US$
1960	239189999.40715733
1961	281849998.7386167
1962	421589997.3921478
1963	387230001.0826439
1964	491500000.5085025
1965	592650006.3147395
1966	547369998.8741429
1967	558159996.2674088
1968	474990001.0935962
1969	458809999.3728101
1970	431509999.1634489
1971	516380001.8597394
1972	580590001.7861273
1973	706540005.8235976
1974	984169998.5936291
1975	1141770005.401225
1976	1121139998.4434235
1977	1248350002.7861443
1978	1629450011.6836283
1979	2129390005.5531416
1980	2544130003.2399597
1981	2606969995.504247
1982	2622579994.1085267
1983	2598129991.304128
1984	2762549995.20816
1985	3509759994.626045
1986	4063469987.2173386
1987	4597150022.048503
1988	5738059996.189554
1989	5183939981.568602
1990	6246810012.860227
1991	6027800027.994434
1992	6276229996.237905
1993	5773949986.552819
1994	6277379993.416369
1995	5510729996.800423
1996	4991860010.227188
1997	4939140022.451059
1998	4838349991.178141
1999	4552640004.610641
2000	4522480006.843807
2001	4900489987.138659
2002	7526509967.183697
2003	13317309949.43902
2004	11683419964.995241
2005	12937640061.993153
2006	14141949971.525002
2007	15957330076.828611
2008	19734550050.50822
2009	20148659962.195904
2010	22168310032.885532
2011	25097100007.392464
2012	21907620066.38943
2013	22613329904.96233
2014	22734290100.809193
2015	21334269915.5733
2016	22381500050.639736
2017	24189459997.273987
2018	24308390068.78995
2019	24197899932.455276
2020	25820520101.046196
2021	28245520044.501877
2022	25206039984.55034