Year	current US$
1975	245942047.0448296
1976	258989177.3377685
1977	278859788.10912573
1978	375838521.017309
1979	329484700.28668565
1980	461443865.19362813
1981	412489714.0416943
1982	327585930.66870683
1983	294556968.85685956
1984	324895283.2038231
1985	307872692.4032702
1986	348581908.6888029
1987	397459862.78316003
1988	443114649.71741843
1989	499697006.030713
1990	597649550.58092
1991	541877717.4044753
1992	500887217.3449706
1993	903117997.2355733
1994	1030722565.826041
1995	926276515.322831
1996	785614895.3629119
1997	1103492384.383766
1998	1214329423.3410149
1999	1314382990.885565
2000	687649169.9423577
2001	735364600.179832
2002	604936711.631468
2003	590899499.776949
2004	818910393.466335
2005	969712839.340631
2006	1252125859.2585578
2007	1498773914.404484
2008	1716287403.013232
2009	1652563471.887869
2010	1889836002.516103
2011	1955742305.315305
2012	2228185583.325738
2013	1955939027.5258498
2014	3084112790.8220034
2015	3077338065.306611
2016	2539194064.6316423
2017	2846639409.928444
2018	3613325515.59231
2019	3594797335.2402472
2020	3180519092.678585
2021	3799639530.5414734
2022	5105145902.993432