Year	current US$
1976	10000
1977	80000
1978	571475.286252215
1979	712506.356578765
1980	949148.535136533
1981	1145419.14069351
1982	8406398.35471126
1983	4541130.18946881
1984	5129802.09569767
1985	4591968.3655536
1986	6914463.93404523
1987	8194186.61067684
1988	21586913.9158402
1989	24766283.2812048
1990	24378453.1447838
1991	23468608.6197771
1992	28193754.5890797
1993	26149829.0638764
1994	31220395.6245447
1995	47951938.1027696
1996	76166932.7152044
1997	98305132.2373818
1998	118535050.808558
1999	127116487.326909
2000	122801161.555359
2001	93075478.3340346
2002	133146756.138827
2003	159492039.076649
2004	203594899.341916
2005	186354315.295944
2006	231550005.623125
2007	308403900.253519
2008	240580313.574776
2009	260981130.107897
2010	350103579.326899
2011	334913163.216004
2012	304506181.012498
2013	368315038.589918
2014	614684246.485376
2015	563873734.60286
2016	467323386.048191
2017	587346816.807916
2018	712157733.781107
2019	753496279.806938
2020	984930745.339245
2021	805808189.424559
2022	832094352.898169
2023	590522550.56534