Year	current US$
1977	71494495.18518518
1978	88322386.29629628
1979	102244362.22222221
1980	110900457.03703703
1981	115651918.88888888
1982	125435589.99999999
1983	131803552.22222221
1984	145533310.74074072
1985	167728455.18518516
1986	187589522.59259257
1987	215009569.6296296
1988	236357523.7037037
1989	267327642.2222222
1990	278098762.9629629
1991	300757888.8888889
1992	310160444.4444444
1993	309812185.1851852
1994	325111814.8148148
1995	342172518.5185185
1996	366911444.4444444
1997	392190592.5925926
1998	445903592.59259254
1999	482009370.3703703
2000	520044370.3703703
2001	520444185.18518513
2002	540336925.9259259
2003	591018407.4074074
2004	599118592.5925926
2005	695555555.5555555
2006	698700666.6666666
2007	758683592.5925926
2008	825976037.037037
2009	771275555.5555555
2010	771014814.8148147
2011	778655555.5555555
2012	799881481.4814814
2013	842618518.5185184
2014	911496296.2962962
2015	997007407.4074073
2016	1061640740.7407407
2017	1125685185.1851852
2018	1166514814.8148148
2019	1213485185.1851852
2020	1043411111.111111
2021	1122800000
2022	1224577777.7777777
2023	1320334235.588974