Year	current US$
1980	679.6714136441532
1981	745.5894272888305
1982	697.8480000196763
1983	632.5671953882021
1984	604.843090577486
1985	537.3386823350725
1986	460.45996609724386
1987	465.775439531504
1988	513.9775381575089
1989	489.7647810359899
1990	607.6423021827214
1991	612.1634940982507
1992	704.1269915564818
1993	784.5486973837994
1994	1021.3321036964761
1995	1134.8098197053378
1996	1198.2188200221308
1997	1199.30532405221
1998	1004.5482944892894
1999	1017.4376442664725
2000	887.6728899388247
2001	851.2093116268713
2002	690.5092645462353
2003	828.6305568084758
2004	917.4511323781066
2005	1043.3181939830524
2006	1125.925376274132
2007	1202.2673580406486
2008	1275.5857402120946
2009	1291.6762067653292
2010	1434.3982682935173
2011	1571.8295504400123
2012	1751.2282310737385
2013	2007.6333892296238
2014	2014.3978616579702
2015	1922.8321701770478
2016	1952.3486801653073
2017	2041.0710294036983
2018	2210.4106087571313
2019	2173.410587763725
2020	2080.1074048304304
2021	2126.7178735256857