Year	current US$
1970	123470001.26726934
1971	146610000.5004554
1972	125389999.6336549
1973	194360000.45761466
1974	301169999.4951487
1975	365670002.10285205
1976	291890003.33845615
1977	271150000.3971161
1978	432169999.3312357
1979	628499996.8986953
1980	556449996.4118006
1981	669750001.4305115
1982	537609998.4236059
1983	490139997.9591371
1984	614940002.441406
1985	599319997.5490575
1986	772339993.1192397
1987	723140000.8350613
1988	1220430017.203093
1989	1270270009.040832
1990	1340500004.5299525
1991	1461430007.9345698
1992	2038459999.5613096
1993	1339210001.8262863
1994	1579049997.0912929
1995	1533720000.9822845
1996	1433930001.0204313
1997	1216870000.720024
1998	1369499994.2779536
1999	1203279998.6600873
2000	903909993.1716918
2001	1430630003.4523015
2002	1627749998.8079066
2003	2328029986.858368
2004	2648590018.0339813
2005	2891159997.4632273
2006	3211759994.506835
2007	3896399981.2603
2008	4519470011.711123
2009	4020989961.147308
2010	4343589989.662172
2011	3873829995.63217
2012	3801879987.239837
2013	3684259976.3870244
2014	4151739974.49875
2015	3273819997.251035
2016	3721869994.1635127
2017	3815809990.8828745
2018	4235429996.490478
2019	3566249994.7547903
2020	4259799995.6607823
2021	3707250015.735625
2022	3267009998.202326