Year	current US$
1970	66080009.46
1971	84004090.7154
1972	175469924.9115
1973	271475074.06560004
1974	327298767.1487
1975	340161996.3415
1976	351610346.8332
1977	492962863.27320004
1978	613105634.5812999
1979	711673497.4927
1980	840537884.8948
1981	950532382.0582999
1982	1011748822.5767999
1983	989538796.043
1984	989252030.1310002
1985	616597085.4484001
1986	665429633.5533
1987	896060620.7911
1988	1307378524.9638
1989	2139769215.1980002
1990	2454583257.758457
1991	3724628412.8626094
1992	3798717568.6877832
1993	3791817906.627235
1994	4040195591.923946
1995	6493892578.033453
1996	8957229535.512201
1997	9691410094.500366
1998	9261394406.329271
1999	8272881930.270276
2000	8947145434.556467
2001	9923062000.136011
2002	15625421371.987135
2003	15952453668.81716
2004	19364964944.26961
2005	20500719334.725502
2006	24539726906.864662
2007	28147560237.8924
2008	30760661712.395657
2009	32362587164.39214
2010	37411078630.727905
2011	41861490940.649704
2012	42506855190.92644
2013	42437945440.47964
2014	48509489988.47658
2015	48740581917.826454
2016	53061108699.3415
2017	65619733659.2232
2018	70076797780.65318
2019	71874029523.145
2020	67281292491.61756
2021	69076348116.41339
2022	66714256264.12877