Year	current US$
1977	384005508.9077493
1978	391479814.20101947
1979	470677291.3896518
1980	598940867.7381307
1981	664213836.501773
1982	728848087.009467
1983	740667757.2309548
1984	764101866.0683631
1985	815058132.947854
1986	931749031.6759969
1987	1026077765.4328595
1988	1080407807.472832
1989	1218868072.425398
1990	1292554580.5479834
1991	1266395443.2131147
1992	1291189917.9294777
1993	1431418930.0547955
1994	1575792849.2150555
1995	1697627541.0867126
1996	1798814114.4013023
1997	2016965534.6877596
1998	2237858939.721068
1999	2244605423.5546584
2000	2672055754.1875234
2001	2565919721.2001133
2002	2655936611.431502
2003	2888163820.278144
2004	3166205952.6557918
2005	3429495665.159842
2006	3773823164.0631585
2007	4055539074.4200373
2008	4150391450.415723
2009	3601431577.891034
2010	3745093905.6515045
2011	4146196590.5841684
2012	4585709460.767062
2013	4914335113.358335
2014	5161778052.716749
2015	4706559939.574163
2016	5081404011.061332
2017	5481036673.97352
2018	6077272093.741782
2019	6692272473.499523
2020	5441103537.388518
2021	7389441347.161286
2022	9351775423.09561