Year	current US$
1965	517904761.9047619
1966	548571428.5714285
1967	589142857.1428571
1968	605523809.5238096
1969	653333333.3333333
1970	931809523.8095238
1971	1064222429.1809217
1972	1389485686.9768991
1973	1745747113.3502214
1974	2049905156.3774319
1975	2564465889.570857
1976	2664800886.2457
1977	3152680652.6806526
1978	3620867383.8398156
1979	4194734071.0816755
1980	5380834774.018276
1981	5170472495.160023
1982	5065626973.337826
1983	4838331857.618299
1984	4836818209.31912
1985	4947417363.294732
1986	5658105686.316243
1987	5872116737.584202
1988	6294678038.339761
1989	6277434081.833226
1990	7819545454.545455
1991	8158043478.260869
1992	9566807208.686243
1993	9060495724.997063
1994	9687372102.725113
1995	11344295231.045786
1996	11935796706.006113
1997	12754406333.980766
1998	13429317877.450657
1999	14007376340.913403
2000	13014898411.959583
2001	13497202013.188177
2002	14517915811.196617
2003	17268238467.99818
2004	19429177970.99401
2005	19940374570.401707
2006	21219135628.556942
2007	23958565834.060425
2008	27531161181.097633
2009	26950139786.33982
2010	29170773718.038284
2011	32015932285.01836
2012	31684963364.944565
2013	33202372437.768444
2014	34697571678.91381
2015	32413840565.857388
2016	31632195594.760418
2017	30336050921.189953
2018	30541655474.18892
2019	30093275259.649822
2020	31455063686.771027
2021	34515097154.4842
2022	34215852362.39492
2023	37859892497.34462