Year	current US$
1976	11680299189.402605
1977	14484046128.249151
1978	17573056567.178406
1979	21511834349.678997
1980	27270448804.165154
1981	30563746234.32151
1982	27563149460.887383
1983	20799630156.05557
1984	21212382812.94222
1985	20938352799.008224
1986	22486432689.523678
1987	22820988160.07366
1988	25500713740.9604
1989	27655097940.297955
1990	33152149450.84591
1991	35722490663.51265
1992	40908895019.03498
1993	46274861613.02387
1994	50019900749.688965
1995	52179657693.95934
1996	52886511463.18543
1997	61452832021.266594
1998	64488307148.967674
1999	61467750318.958694
2000	69111236689.48259
2001	69031198220.65329
2002	66616647008.17557
2003	68887041612.29422
2004	78963998463.61433
2005	94387874699.8181
2006	106114571548.73047
2007	130618028956.83994
2008	156298467101.2606
2009	144586244887.57593
2010	179017252218.0798
2011	213682005714.41608
2012	229568975104.14166
2013	244316511045.40656
2014	251415449039.17883
2015	227782299429.97943
2016	216423583282.6183
2017	235857746014.52512
2018	244343878197.5694
2019	239295682497.7329
2020	173457973958.28726
2021	221133772080.5021
2022	292963243445.0386
2023	300037429902.5784