Year	current US$
1976	578311622.7405837
1977	743528819.7621226
1978	974720507.9647989
1979	1298894850.2994013
1980	2174377611.9402986
1981	2103814365.4114366
1982	2174408877.928483
1983	2160141601.779755
1984	2280841176.4705887
1985	2435306333.9731283
1986	3055706214.6892657
1987	3667785870.8891597
1988	4236132622.333751
1989	4532358343.195267
1990	5557199359.795135
1991	5737621590.909091
1992	6866387744.458931
1993	6551304004.711426
1994	7373203928.571429
1995	9431244501.94049
1996	9527828105.395231
1997	9024625997.719498
1998	10557893665.158371
1999	9895297734.62783
2000	9128568331.76249
2001	9655802367.941711
2002	10831199038.461538
2003	13954369195.922989
2004	16345890000
2005	17475010570.824524
2006	18960303600.552002
2007	22433135778.811935
2008	27388166105.170647
2009	25975737408.28577
2010	25431297057.00163
2011	28366743790.559685
2012	24872760941.030224
2013	23645295604.22372
2014	22592065861.270252
2015	19774892629.40306
2016	20211946790.618786
2017	22248603081.81162
2018	24660896379.09145
2019	24543810300.27267
2020	23469178603.842915
2021	26896035056.594997
2022	27052119235.047794
2023	28974245050.094276