Year	current US$
1980	555.3640977566779
1981	488.0928751488002
1982	474.4974716396438
1983	455.48661273687367
1984	364.92967671011445
1985	348.9895717524272
1986	384.4309156697255
1987	267.5751545385185
1988	255.7582757372152
1989	244.24908455264895
1990	296.1373552271147
1991	230.1603315129985
1992	256.87994926014443
1993	274.8884839737851
1994	222.8199896726808
1995	226.20578280593935
1996	287.87989107918486
1997	240.73443480248704
1998	242.42192214850843
1999	235.19696607578402
2000	248.3144384174909
2001	285.73874533182266
2002	266.8309117508578
2003	306.9191987005892
2004	235.90307758136393
2005	264.8242793609855
2006	279.6588168864543
2007	362.16111949168425
2008	444.1456431471241
2009	367.35813628608713
2010	371.8617857848559
2011	420.07473146184805
2012	397.80601352014827
2013	421.9430951234117
2014	419.85342432647764
2015	363.27558134761773
2016	370.85297574619557
2017	415.64587337487603
2018	436.18907795063427
2019	436.52598161434145
2020	393.3821623001903
2021	432.3035871205675