Year	current US$
1970	220.1743423365986
1971	230.2929611294067
1972	244.21664428057974
1973	258.25900399316197
1974	225.7887249784708
1975	271.370657456517
1976	294.45039003473477
1977	299.9828383612106
1978	287.9425101707411
1979	284.5887906165837
1980	313.7407687056185
1981	328.45126998778585
1982	432.8706480531073
1983	478.4637715535196
1984	506.2080804798473
1985	556.3911364522188
1986	633.6774741807343
1987	638.5214056474782
1988	541.5370987749778
1989	577.9931303052372
1990	576.5340311926792
1991	536.9773910597905
1992	588.9565593251325
1993	648.840211361253
1994	720.0783357726802
1995	818.7023468667104
1996	895.2071051099811
1997	1042.2886387635124
1998	1135.1621781876975
1999	1156.2509618039508
2000	1241.8443771797897
2001	1214.765312799519
2002	1026.3569017269326
2003	930.1728237780096
2004	873.2198957468695
2005	948.8545666547789
2006	1122.8792715918532
2007	1354.248352662285
2008	1619.8354501241895
2009	1927.7926488278556
2010	2135.953306139843
2011	2193.8567340598693
2012	2604.911632280417
2013	2637.790416089665
2014	2758.8109677540847
2015	3040.473382203848
2016	3012.2654095163825
2017	2037.319800210014
2018	2082.0579003587354
2019	2476.5113689191
2020	3015.943028136074
2021	3234.2118221422515