Year	current US$
1979	29381448147.336113
1980	53669819789.987366
1981	66877700183.56109
1982	48177383532.49885
1983	44504205872.06688
1984	48531336129.84722
1985	52171849590.457504
1986	28218159353.22415
1987	37984011032.64226
1988	37340985975.13093
1989	43677769505.90155
1990	51786315868.3481
1991	57040993589.38256
1992	59725888326.5297
1993	99933069077.4893
1994	106229135012.29144
1995	78670266392.16129
1996	92070770089.09068
1997	114255790549.42502
1998	125804406917.53694
1999	142065138831
2000	154794103436.23926
2001	165617617793.04443
2002	166676024256.21356
2003	151443550839.4018
2004	175925101534.58472
2005	180441794537.24326
2006	223387725482.5331
2007	237979149758.10977
2008	237016438767.9648
2009	192059572165.29984
2010	211391162986.20087
2011	236620899217.08298
2012	240491087210.98126
2013	217227738307.5191
2014	229879773275.8743
2015	224648133654.56384
2016	215606093592.17374
2017	245481192672.81644
2018	270042453657.02472
2019	278247942103.41266
2020	249406214561.15524
2021	286829319487.0442
2022	294166593649.37256
2023	352046465920.93567