Year	current US$
1980	2728782598.317121
1981	2642479890.031565
1982	2637630891.986406
1983	2638402172.359583
1984	2636384644.8482785
1985	2743872451.2636847
1986	4069176719.1061206
1987	5235072424.892704
1988	5675672110.982026
1989	5557013264.869492
1990	7147941980.996257
1991	6282733612.273361
1992	6070796472.763477
1993	6318567271.250677
1994	7138678803.83125
1995	10501343763.21353
1996	9867991100.323626
1997	9028562667.95287
1998	9849271623.672232
1999	11987011050.459326
2000	12287030435.81241
2001	11760199099.312634
2002	11655685871.936354
2003	13462367268.136927
2004	15390028950.542822
2005	15565154192.097654
2006	16627153453.501356
2007	18600622292.569145
2008	20978986243.19084
2009	19505899273.963787
2010	21575743780.89953
2011	25146980987.68942
2012	22475837484.32819
2013	22937814890.686356
2014	23383060100.752426
2015	21800275410.06602
2016	20596404970.979874
2017	21279093455.650238
2018	20814948272.629665
2019	19976231038.212875
2020	20154186453.164795
2021	22865942194.845055
2022	22274496312.18041
2023	22557431913.543835