Year	current US$
1975	733416030.9786161
1976	643501306.5883029
1977	693595102.2951043
1978	763877976.7719321
1979	1012126302.7553669
1980	1360099382.580105
1981	1332349150.335104
1982	1322858563.6402402
1983	1131026903.6428812
1984	1113752046.5573952
1985	1187330765.9420264
1986	1436317118.361654
1987	1953427130.207817
1988	2447770405.911432
1989	2613135718.905407
1990	3772296877.5862856
1991	4158258695.4927506
1992	4486109041.559407
1993	5268105699.182952
1994	5250163207.664565
1995	6324436593.826028
1996	6235876446.517803
1997	5996203933.574923
1998	6659975529.922833
1999	6345446180.512904
2000	6175454536.189422
2001	5929755379.893112
2002	6361175722.854087
2003	7449421624.501781
2004	8765564433.910534
2005	9319048910.89278
2006	11026517632.72674
2007	13440172783.179153
2008	15295051552.813467
2009	14081366691.038103
2010	14634275411.39963
2011	15709806154.328903
2012	13489251037.431662
2013	14392915484.354448
2014	15848033645.280783
2015	13908612254.799795
2016	14726875796.058754
2017	16497987448.858503
2018	18667794293.18681
2019	19798335726.731396
2020	15550792564.241442
2021	20031938590.404133
2022	23891693253.62563
2023	25510436440.22256