Year	current US$
1970	6294.23965195426
1971	6932.37470801782
1972	7545.84127104836
1973	8270.27924522766
1974	9335.56996004455
1975	10535.7239123519
1976	11472.2429496126
1977	12515.4946832341
1978	13743.2205746502
1979	15306.3602255713
1980	17275.4535413775
1981	19547.2495752304
1982	21533.8829479223
1983	23245.4162437518
1984	25045.9681979052
1985	26851.3527382565
1986	28444.202860698
1987	30201.9452018419
1988	32289.1211605394
1989	34705.8297199859
1990	37146.6572345346
1991	39610.566996384
1992	41704.0697474653
1993	43919.6277658867
1994	46109.0421080281
1995	48412.8475460172
1996	50743.0228580708
1997	53074.6363064499
1998	55294.1693225947
1999	57809.6351453874
2000	61061.5385838594
2001	64386.425429428
2002	67475.3565844955
2003	71041.5521742335
2004	13564449.1717564
2005	14453299.7401931
2006	15618173.6825919
2007	16156852.0819183
2008	17348853.4714586
2009	15486570.7541631
2010	18653824.5618577
2011	20698128.4627669
2012	17022061.2143295
2013	17440275.7457932
2014	16427551.9400952
2015	18253902.7085515
2016	18722606.1128326
2017	19111100.3362876
2018	20077895.5002187
2019	20898251.3161336
2020	19201905.189629
2021	20964387.8900054