Year	current US$
1975	40204384480.9877
1976	39940538672.1832
1977	42150433849.2985
1978	55589809155.9296
1979	66919967750.0767
1980	66842595600.8795
1981	41818102289.5562
1982	31766643652.2217
1983	28336177340.4545
1984	25943761784.3564
1985	27682241825.066
1986	49876196768.1076
1987	58402212000.2955
1988	78657106558.9155
1989	84713489982.7562
1990	103939078469.486
1991	91754308256.4142
1992	93467176176.9476
1993	70874640544.6912
1994	78873675832.7216
1995	102707187199.348
1996	101680144102.677
1997	108671297288.628
1998	131893254833.934
1999	139522912037.813
2000	116711355783.022
2001	116219042324.456
2002	105974237312.667
2003	117713245580.288
2004	140432549524.249
2005	137931199326.444
2006	158680760543.844
2007	190744641595.586
2008	183913643110.084
2009	84014908339.6473
2010	88340486391.8917
2011	122594192609.447
2012	92051011271.8263
2013	94737256016.4754
2014	98844075196.2428
2015	107991294545.095
2016	101040460272.068
2017	122760418718.571
2018	138737208381.381
2019	145528453929.719
2020	43471453155.3064
2021	149163686767.036