Year	current US$
1975	5354131473.653542
1976	5023470250.243797
1977	6071301238.171268
1978	8078271024.518011
1979	10141854426.582434
1980	11449889380.122965
1981	11203847878.274668
1982	11421307187.84204
1983	11252356624.456514
1984	12216426909.01152
1985	12637511502.676958
1986	17721560417.613037
1987	21417365802.371723
1988	24197375333.359295
1989	24370005315.889908
1990	27649292241.395237
1991	28809878141.982517
1992	33103722662.25497
1993	30088075076.54937
1994	33421659959.50038
1995	39970366099.89726
1996	43680554605.43946
1997	42976432596.8121
1998	48271395320.670685
1999	52316042649.378
2000	52724545554.0357
2001	55874369948.5194
2002	60516796373.1733
2003	74368262645.2772
2004	84868222717.2439
2005	92856757565.9175
2006	104875196337.86
2007	121064390265.994
2008	134139426020.262
2009	114474248411.286
2010	113968891496.248
2011	133463679492.937
2012	124867480626.317
2013	130021690631.726
2014	137530674680.073
2015	121449668222.709
2016	130643572624.581
2017	144413171652.633
2018	155361484628.205
2019	156671823790.907
2020	90048604427.9743
2021	118545701981.675
2022	165241229240.666
2023	198125798548.568