Year	current US$
1976	1625583386.141962
1977	2337628384.1960306
1978	2486889629.0323067
1979	2817510313.240042
1980	3823879172.3235426
1981	4748037334.8834095
1982	2739397591.446303
1983	2720027397.123222
1984	2379540219.7652674
1985	2895678710.102139
1986	2328279690.971976
1987	1639712194.1409936
1988	1664278726.5099983
1989	1863759277.6940155
1990	2707127461.053845
1991	3103323661.8309155
1992	3903731865.9329643
1993	2799502026.013006
1994	3485009334.6673336
1995	3545770930.4652324
1996	4228216238.119059
1997	4764522796.398199
1998	4180544797.3986993
1999	4336371435.717858
2000	4670012836.337779
2001	4352293187.14631
2002	4819000247.1614
2003	5586944815.23525
2004	6676709145.761776
2005	9226113432.91401
2006	12114766502.94364
2007	13634474983.446
2008	18639860424.4336
2009	14953739739.74703
2010	16912980422.07
2011	21796916721.0884
2012	23737626062.6851
2013	26331788594.28
2014	27276099146.92503
2015	20050173937.04118
2016	20824188001.96088
2017	23116597108.87599
2018	22813395699.650772
2019	22371414954.89792
2020	19037763436.82787
2021	25642356391.37985
2022	28176218852.53505
2023	27924935045.97146