Year	current US$
1979	271852896.64271307
1980	272329166.9182094
1981	245221021.94772422
1982	302065476.52031446
1983	276271673.0283462
1984	216836766.60055807
1985	297153367.3920946
1986	389828752.38534766
1987	473153733.621269
1988	482796213.39619297
1989	514093227.7125492
1990	550199658.2091988
1991	627067228.9702767
1992	654345916.0640945
1993	600008658.629995
1994	487387800.12048024
1995	534911041.8711408
1996	583322397.2760719
1997	592972705.9586056
1998	627508894.6041394
1999	579320768.932271
2000	489511798.457313
2001	435938275.1359923
2002	483931981.4497353
2003	682634528.5416045
2004	852367295.9738281
2005	948865741.9360838
2006	1040725092.4952236
2007	1386602261.8991501
2008	1635277575.6807609
2009	1775934418.0749898
2010	2034335959.6195157
2011	2550603522.608467
2012	2782899644.465877
2013	3157068895.0352387
2014	2601942562.1489
2015	2265528582.284581
2016	2598134342.6859026
2017	2946988905.235322
2018	3202213236.545655
2019	3020607158.309209
2020	3147411480.235695
2021	3489501459.9507957
2022	3065856858.8739276
2023	3491492008.991153