Year	current US$
1967	38967414.01855956
1968	48618404.36746606
1969	48553130.98362369
1970	47362704.136024326
1971	55628258.97342223
1972	75602026.75716977
1973	88904714.14218427
1974	65011618.71941761
1975	112136502.28241043
1976	115464501.19496301
1977	151438655.9764707
1978	194627789.4134901
1979	246884145.46100444
1985	202063551.80896583
1986	352880479.33482534
1987	404419581.7346177
1988	392320321.71392643
1989	416100397.4382497
1990	470989727.8380339
1991	502861778.19204
1992	542197308.9374235
1993	510865175.09080887
1994	449815762.3652376
1995	601344111.4206779
1996	619860321.6487507
1997	596386769.9742861
1998	517732986.395371
1999	561553153.4575025
2000	523225294.0465071
2001	595967698.7950315
2002	671938510.551133
2003	894140764.1288617
2004	1101062249.9535553
2005	1264564105.1690629
2006	1395490506.4237614
2007	1671927760.007915
2008	2266067056.2584095
2009	2068011059.555047
2010	2220615889.033895
2011	2424448448.153141
2012	1843753431.183534
2013	2239416566.1482663
2014	2572784084.035775
2015	2405464920.2830896
2016	2606780902.675045
2017	2804221254.639682
2018	3191892232.9323773
2019	3463403663.9963274
2020	3469239735.2503386
2021	3890213306.955472
2022	3726804149.215148
2023	4200119679.2342515