Year	current US$
1981	43956358585.521515
1982	39770753340.09503
1983	30192444341.32648
1984	22544163704.41183
1985	24986825362.995953
1986	21899640899.72282
1987	21134593762.1587
1988	22739872045.958805
1989	20800731645.820988
1990	23042229210.877224
1991	26521701606.372448
1992	24109814591.201595
1993	26381339982.773994
1994	32248766352.08244
1995	45824072624.65864
1996	54927155230.068245
1997	58034059645.61271
1998	57013031378.92186
1999	25925885794.92286
2000	25705653300.296524
2001	26464150519.08777
2002	27682932362.64817
2003	31985047753.506493
2004	38701034809.44086
2005	46314584346.43045
2006	55508701706.33194
2007	62344391696.53692
2008	71754298448.11433
2009	64388454535.11362
2010	68141672049.864975
2011	81929640997.08292
2012	94266028630.64944
2013	107535823878.8926
2014	120446605552.0209
2015	112030653166.0431
2016	99889398684.87209
2017	98011559575.7944
2018	112461035230.76472
2019	125855400307.20367
2020	120803496506.96857
2021	141643738306.47998
2022	156883059209.16336
2023	141895329073.36807