Year	current US$
1977	3910937240.8723598
1978	4987618301.168349
1979	5998094348.588203
1980	7366488033.832134
1981	7338098176.131994
1982	6273904201.215862
1983	5821756624.185849
1984	5598808633.452988
1985	5423364033.578013
1986	5384054998.263941
1987	6158241262.106602
1988	6703009147.236135
1989	7880543358.097292
1990	9299925837.919155
1991	8919486049.955545
1992	9583104265.815233
1993	9897156228.178434
1994	9952204057.056223
1995	11379351092.18859
1996	12580386460.863594
1997	13374654704.33481
1998	14075717060.85428
1999	15259308501.673428
2000	15076952454.24065
2001	15663493526.768967
2002	17232021220.951477
2003	23019572151.331604
2004	26969598698.03694
2005	28245470354.564617
2006	33353141240.12897
2007	37380272032.49646
2008	39247077082.17353
2009	37039783681.80966
2010	43548371043.96487
2011	49136548400.5328
2012	53315267708.20471
2013	53034284265.50808
2014	54437128676.905785
2015	55555722885.02715
2016	54481192485.99633
2017	60828823512.54775
2018	66428915411.52116
2019	68483258377.60905
2020	44450253267.76705
2021	52344577620.31711
2022	65667981849.80843