Year	current US$
1968	37228616778.79744
1969	42284219758.33585
1970	47213840470.36553
1971	51904159316.399055
1972	61919761989.622505
1973	78184021995.02583
1974	103209135183.11913
1975	140913458769.98886
1976	173523146069.80655
1977	201755086872.0734
1978	227272257561.9071
1979	248091490547.81256
1980	303728010900.2695
1981	344702429512.4787
1982	324975148053.5539
1983	331940325224.22797
1984	323721573113.68665
1985	310689105948.8033
1986	321650280842.3527
1987	317915476290.839
1988	329211797679.444
1989	328156712552.68744
1990	389090727191.21893
1991	406838780761.34503
1992	454434320310.2408
1993	510719894068.1737
1994	540015079479.83246
1995	537602898144.9755
1996	597982352637.6722
1997	662467604721.6337
1998	661456579310.986
1999	667665531358.4241
2000	709590514944.026
2001	710716868697.082
2002	687635902551.0289
2003	771312671541.3466
2004	951297156925.7173
2005	1139676305214.2805
2006	1357479985211.3843
2007	1702592309550.9429
2008	1926812902608.417
2009	1835531868755.6357
2010	2199061791891.7124
2011	2522677740037.3228
2012	2628373472050.3984
2013	2618842469147.358
2014	2714594273846.588
2015	2611969378838.4087
2016	2656142788096.311
2017	2863485022044.7446
2018	2930521028268.4766
2019	2942543282134.908
2020	2658759581503.852
2021	3207448074522.9785
2022	3611314480288.665
2023	3984958834964.584