Year	current US$
1978	2604416152.4592323
1979	3552532656.986927
1980	4305742946.734193
1981	5037893376.526378
1982	5071473214.300833
1983	4671318724.042453
1984	4812061825.291713
1985	4833315039.176264
1986	5635013245.293384
1987	6588926651.04015
1988	7027871121.397266
1989	5307334138.352955
1990	4545636204.693226
1991	4090145242.109233
1992	4942373682.870266
1993	5363057244.699944
1994	5889321501.087842
1995	6525258814.490036
1996	6769394756.374234
1997	7030528093.469587
1998	7293162221.17205
1999	7719517385.796472
2000	8567133295.236044
2001	9061965976.678207
2002	9456877764.452152
2003	10334200896.537191
2004	12047917815.909216
2005	13476916833.389471
2006	15064628923.783983
2007	17075494531.636559
2008	20362121483.035133
2009	23325280843.93677
2010	25592556025.165844
2011	27766547042.481937
2012	30120594696.72957
2013	32620735660.842182
2014	34989080746.58063
2015	36645221073.129585
2016	38173997609.61958
2017	40069457312.08772
2018	42817287049.63225
2019	44703224059.55658
2020	44216630671.30763
2021	46904440799.027695
2022	49137048514.68079
2023	50512676873.98195