Year	current US$
1981	526530833.3333333
1982	817534766.6666666
1983	604888033.3333334
1984	459814874.99999976
1985	466058575
1986	395669600
1987	268017866.66666698
1988	289164100
1989	817207100
1990	635025660
1991	569534115.7894737
1992	472588389.6713615
1993	277237611.2048599
1994	317145595.8034503
1995	513052858.8306101
1996	389086120.60838467
1997	398978102.12787503
1998	290980183.94201756
1999	284274191.67642003
2000	108974213.73547941
2001	96764468.17087586
2002	94354154.4835087
2003	249398707.8514487
2004	412087701.3026458
2005	824818597.9011714
2006	1400236684.2393472
2007	1622926517.6881502
2008	1637741850.943307
2009	1258291741.3817685
2010	2307456180.8837442
2011	3774447443.045148
2012	4112467371.351965
2013	3868272175.0214496
2014	3710867395.756007
2015	2699101827.3022127
2016	2607330052.1269712
2017	3422063102.5562243
2018	3867984130.830699
2019	4209315322.9826393
2020	3157596362.9783635
2021	4904606689.343754
2022	5867716585.608306
2023	7728433137.336438