Year	current US$
1970	103472052.85155645
1971	122023613.92237118
1972	207120150.3635155
1973	271435334.7510812
1974	799319770.5663108
1975	1352228447.284321
1976	2211755209.84694
1977	1631392504.9896371
1978	836672267.230286
1979	997547762.4646413
1980	1178533341.7613456
1981	1403959666.0162857
1982	1266865728.2063346
1983	1193231505.9429753
1984	1174029463.1413176
1985	1402519352.569021
1986	1578084559.5979214
1987	865119367.7393568
1988	1436973512.002098
1989	1101225269.3777099
1990	1290288041.2137613
1991	1430046525.021477
1992	1254100044.829118
1993	982941200.1773379
1994	916431395.962112
1995	1155568064.0371287
1996	1414908674.756955
1997	1638598930.457499
1998	1773534829.1815886
1999	1220238888.4440467
2000	1112730391.0865536
2001	1142565281.1279404
2002	1339576917.1343768
2003	1474236410.906228
2004	1670290300.624477
2005	2047316981.1059022
2006	2483291281.892997
2007	3098743243.9935207
2008	3906835327.6227612
2009	3389547868.501661
2010	4268820209.7622547
2011	4851661129.299505
2012	4630213076.113062
2013	5134543031.763879
2014	6396700775.257351
2015	4204319943.615189
2016	3783962679.800123
2017	3179773081.084479
2018	3248348920.6200094
2019	3695291724.5018053
2020	3047512950.3722706
2021	3394428205.0540204
2022	3280113386.951996
2023	3499886008.195049