Year	current US$
1970	47874949.576442115
1971	73598018.98472968
1972	105276326.64283751
1973	142258331.60836267
1974	147711267.6056338
1975	202595151.9140068
1976	209445141.06583074
1977	233992121.55317953
1978	294800819.7771231
1979	329383599.3395707
1980	422325838.0466271
1981	356340721.4254672
1982	333956383.54229206
1983	379986587.77120316
1984	384220888.02010614
1985	394928323.93504995
1986	563173198.482933
1987	731396002.160994
1988	816627537.0268788
1989	872946355.4463555
1990	1115825688.0733945
1991	1277917306.5564086
1992	1417136762.8607275
1993	1575019822.761194
1994	1716995418.3747287
1995	2075994800.218938
1996	2040651465.7980456
1997	1980760036.0847993
1998	2113563014.0031116
1999	2316800829.0405455
2000	2294178759.14824
2001	2199375935.718113
2002	2446360920.9502006
2003	3113692046.9517584
2004	3900980908.757153
2005	4213676524.376652
2006	4383506433.543523
2007	5459311603.518057
2008	5899560520.246093
2009	5486912252.8953085
2010	5523971018.050011
2011	6294965908.200401
2012	6222945880.392189
2013	6740293345.400412
2014	7355024061.222719
2015	5109310189.866795
2016	5337295315.878223
2017	5826097953.324716
2018	6482682086.028231
2019	6336841436.470578
2020	6436136868.200796
2021	7676548779.530885
2022	7330231554.19069
2023	7460012860.402093