Year	current US$
1977	24700000
1978	29500000
1979	38200000
1980	44600000
1981	52500000
1982	51700000
1983	62800000
1984	132100000
1985	150300000
1986	171925925.92592597
1987	198244444.44444394
1988	234896296.29629594
1989	258507407.40740782
1990	308318518.5185184
1991	311307407.40740716
1992	329092592.5925926
1993	373592592.5925927
1994	391440740.7407406
1995	348048148.1481482
1996	364096296.2962964
1997	402422222.2222224
1998	424959259.2592596
1999	427408444.4444441
2000	551894766.5092214
2001	539904320.8076011
2002	561895130.2411194
2003	629831689.086335
2004	706040998.2724017
2005	731632676.5266583
2006	757190247.6519686
2007	742314596.6944239
2008	881891366.5474467
2009	829944571.2268994
2010	798756289.4551864
2011	831751505.3267347
2012	849966875.6201967
2013	840600042.7518708
2014	927425422.3547146
2015	947493175.8589178
2016	991565957.3974036
2017	950049990.0785887
2018	991100461.2590889
2019	1141507018.4790993
2020	555059629.5869551
2021	653118427.772085
2022	1026301772.592593
2023	1120481224.4444478