Year	current US$
1975	749129748.1605784
1976	790357254.5332818
1977	716261764.5078233
1978	766642356.1440547
1979	723738502.703893
1980	744384129.733958
1981	815153652.3897336
1982	865516039.8000126
1983	939291262.1220036
1984	1021176058.6378794
1985	1102669184.4622602
1986	1167630317.841059
1987	1036974910.4474584
1988	1662877859.220189
1989	1353137647.6838706
1990	1402541176.5120633
1991	2054974089.364303
1992	2491486594.189168
1993	2533727592.0416512
1994	2791435272.26653
1995	3441205692.9165983
1996	3506695719.572588
1997	3443413388.6569595
1998	3120425502.662407
1999	3517242477.254799
2000	3654031716.398547
2001	3984000517.074414
2002	4284028482.5121264
2003	4658246918.321186
2004	5337833248.014341
2005	6293046161.7593155
2006	7274595706.574058
2007	8639235912.590769
2008	10351914177.483913
2009	10401851767.708315
2010	11242275287.581013
2011	12829541141.061968
2012	14054443213.488718
2013	15227991395.12074
2014	16702610842.35294
2015	18049954289.472065
2016	20016747857.636715
2017	22177200588.182632
2018	24571753583.393467
2019	27089390032.797966
2020	25872797891.766376
2021	26961061151.733734
2022	29504829319.316875
2023	31772759998.85713