Year	current US$
1967	227731653.20207033
1968	269344136.76935697
1969	264345465.32429183
1970	281619803.03429043
1971	310392227.7006927
1972	383079020.539284
1973	480736651.9890739
1974	547758399.1017574
1975	765894198.622668
1976	815616666.6054267
1977	837912158.3625268
1978	1104487150.4777231
1979	1403115316.7469878
1980	2013383504.1445446
1981	1777560925.1977172
1982	1538862920.846488
1983	1507440367.8946607
1984	1452574021.6079001
1985	1314463929.4470396
1986	1583906352.0557246
1987	1622667550.8452778
1988	1767774197.4344323
1989	1632407853.753046
1990	2106569300.8381238
1991	2327134638.52103
1992	2375019461.9741926
1993	2446503212.2058754
1994	1789296249.216163
1995	2326496772.925815
1996	2343754740.252138
1997	2083451689.495196
1998	2018675088.6544921
1999	2647519998.465441
2000	2276561618.794659
2001	2500257408.6480637
2002	2757098049.249103
2003	3333370806.684698
2004	3865279718.7212925
2005	4586880303.3096695
2006	4810956583.532824
2007	5752400836.917219
2008	7190840146.133529
2009	7207385504.942517
2010	7760075843.401757
2011	9089378225.58235
2012	8801547773.558342
2013	10426713748.621925
2014	11364137115.696085
2015	10276726628.639883
2016	10754363169.508612
2017	11657474058.46914
2018	12762950772.835787
2019	12782776631.47458
2020	12820667490.864376
2021	14180975513.392475
2022	14039823661.355772
2023	15539250847.774782