Year	current US$
1980	2451668.21194302
1981	2564079.79488257
1982	2548969.56126438
1983	2647680.32183688
1984	2998885.10302082
1985	3055245.5401373
1986	3688096.97773767
1987	5019282.79155263
1988	5839798.17519187
1989	5974157.57791433
1990	6386849.04944052
1991	5192370.8392779
1992	5030430.89115938
1993	4793433.77986529
1994	5668495.92204358
1995	6011522.67966535
1996	6368239.49540371
1997	7616701.3035817
1998	9952751.95881053
1999	12534060.9777271
2000	18697002.911215
2001	17848725.144946
2002	20170395.5016115
2003	23590195.6960784
2004	27061823.5728155
2005	33770878.3106576
2006	34247365.4483861
2007	40982917.1658776
2008	38081896.8146335
2009	47574340.9585313
2010	44530315.7670286
2011	56049718.2567145
2012	65231988.6883944
2013	74930673.2092307
2014	92126527.7147887
2015	108082009.014123
2016	114625801.901878
2017	129962956.775768
2018	129331957.809415
2019	133945556.831105
2020	126756098.045406
2021	138464662.895285