Year	current US$
1975	7.835762536445401
1976	440.31751643259844
1977	340.77893963930705
1978	390.5714546570605
1979	542.9025297447789
1980	635.1054000015664
1981	679.45134679103
1982	779.4320053889015
1983	519.817266100379
1984	667.3172856156705
1985	399.80789094801895
1986	506.1205497569279
1987	2963.64689038382
1988	1579.602020242967
1989	767.4392898185594
1990	551.0781902395491
1991	535.5997678941459
1992	851.4684575973695
1993	425.5542913454723
1994	705.0946512311078
1995	776.2128385206531
1996	1075.850603744449
1997	1051.9210918422534
1998	538.7170497426262
1999	412.8630725179969
2000	418.1365646200819
2001	866.8537732655535
2002	1218.649187027474
2003	639.2221584959268
2004	819.1196463858308
2005	910.0081172077956
2006	1418.7437230544667
2007	1053.305703062696
2008	1533.2943925233644
2009	1530.553449767083
2010	1318.4833978589668
2011	3481.308411214953
2012	2347.5216088295833
2013	2527.0196146352723
2014	3147.07764355083
2015	4564.677900696782
2016	2252.1194742036123
2017	2634.8356747917896
2018	2519.098098410805
2019	3329.682324044934
2020	3890.1437684787243
2021	3214.0305535106395
2022	5618.812002589374