Year	current US$
1977	1411209198.2463572
1978	2128915186.6380887
1979	2548366026.1162453
1980	3031295667.13237
1981	2834549629.5102468
1982	2106871286.826402
1983	1937520184.3448215
1984	1881324587.6297178
1985	1820503977.6568902
1986	1835848412.6480436
1987	1863857361.155792
1988	2174714918.401133
1989	2603227438.7588253
1990	3166472924.7442007
1991	3126218039.447029
1992	3413191197.549212
1993	3285395363.439496
1994	2233190497.8247604
1995	2069104656.524189
1996	2491568733.864992
1997	2467757773.488381
1998	2985701449.660231
1999	3965711796.7559886
2000	5311104533.906332
2001	5595232941.415993
2002	6876644558.960519
2003	8165169284.596782
2004	8992993198.672321
2005	7076007937.239731
2006	8340804345.490789
2007	8898407369.047144
2008	10475703426.283989
2009	9773715502.909039
2010	11122117943.940866
2011	12263317205.758688
2012	13135654183.841883
2013	13130641972.026
2014	12412460930.008162
2015	16650941810.072903
2016	17730511398.579723
2017	19994679535.122646
2018	22135265796.58332
2019	25239362368.32789
2020	18788321555.644855
2021	21398531582.318874
2022	22220045559.78134