Year	current US$
1960	35292385.89639167
1961	38619185.27369755
1962	42207454.45241249
1963	45502434.687055685
1964	49858419.34364016
1965	54443876.73906306
1966	62623521.05977408
1967	73982985.8447807
1968	92678082.78405239
1969	100409856.04206909
1970	131139257.46844703
1971	163661986.06486967
1972	202567712.34996665
1973	300599037.0457879
1974	379041527.5277898
1975	426905456.05997497
1976	431307607.8269019
1977	534764121.8110124
1978	687611165.5157174
1979	911096469.1100812
1980	1202869182.025797
1981	1308175318.9170327
1982	1164266685.8315504
1983	1177882555.4321804
1984	1205470230.8196487
1985	946904892.1798812
1986	1125193173.061777
1987	1440759383.4446833
1988	1941306625.658705
1989	2680201262.0068827
1990	3591116419.219701
1991	3686564365.981271
1992	3872471530.649729
1993	3832243946.225354
1994	3954414829.521221
1995	4570510066.528221
1996	4120543999.0469875
1997	4402093480.184827
1998	5026124736.14963
1999	4702431345.073248
2000	5080755811.674311
2001	4821492159.145381
2002	4892164597.066402
2003	6815137174.488373
2004	8211316286.304844
2005	8220950827.681905
2006	8206246299.504313
2007	9047661872.027107
2008	11212900136.490314
2009	11408421649.77299
2010	13680029836.795527
2011	16315064622.688347
2012	15831089774.590096
2013	14630116867.573736
2014	14977652122.869186
2015	14353478638.348219
2016	13761696931.647078
2017	15449031328.301546
2018	16771112791.943117
2019	17849105813.599216
2020	17565427563.41914
2021	19162550253.633495
2022	19357924185.296585
2023	19824152636.227585