Year	current US$
1976	95791537.13460559
1977	142267535.77105585
1978	176455133.81245133
1979	301742555.2567817
1980	484177198.007144
1981	470112074.9519359
1982	475001341.3283422
1983	431725362.2091669
1984	533513482.77549815
1985	564275387.0196708
1986	831593661.2250606
1987	954495170.0851295
1988	1052558904.4433286
1989	1201884000.5813935
1990	1291330570.2199311
1991	990002371.3545166
1992	1282634355.8020487
1993	1632871638.3505769
1994	1927516048.7747645
1995	2104339638.9289951
1996	1940437504.48948
1997	1680327766.4415448
1998	2564657286.6179504
1999	1871535501.7495964
2000	1617674571.3308568
2001	1647626407.3158078
2002	1997998703.8324192
2003	2635134670.5590777
2004	2994812303.292629
2005	3173485054.456148
2006	3443391030.9123287
2007	3154761692.122866
2008	3951876217.683193
2009	4216445866.682348
2010	3435414586.3316193
2011	4609076408.230554
2012	3109183474.8881183
2013	2728152459.205242
2014	2209817877.447999
2015	2650574393.614515
2016	2828695817.9726973
2017	3587787928.989578
2018	3931220852.2274423
2019	3699412255.471181
2020	2776991733.833637
2021	3939920019.5361576
2022	3920347428.451259
2023	3140744586.945983