Year	current US$
1978	11470138769.402647
1979	13061733969.52549
1980	18146089144.725822
1981	18291318030.241142
1982	15631214620.484573
1983	14037199476.414589
1984	12264859275.083117
1985	12318364012.51338
1986	12088287757.568033
1987	12871736165.026615
1988	14148660912.123108
1989	15357408691.451967
1990	17879486086.779587
1991	19173565702.035763
1992	19400522266.57328
1993	20571399674.616577
1994	21092982919.81254
1995	21615503464.770752
1996	22699294468.99358
1997	23134732688.02936
1998	23762835206.09654
1999	25420981848.798706
2000	25091527058.23146
2001	27110338667.57935
2002	27804847628.85987
2003	33005619573.715145
2004	40480476809.61173
2005	47925080979.02617
2006	60596764178.77961
2007	77928452470.74257
2008	100923142186.77975
2009	88356172614.91669
2010	99361743228.64163
2011	117728253980.42616
2012	116250402175.23328
2013	116214879108.98074
2014	124710827178.71548
2015	107681452831.43796
2016	92449435677.9031
2017	104914041596.42615
2018	122755081617.52936
2019	129482889625.34781
2020	97815468501.66724
2021	104971968836.73088
2022	127414644688.84512