Year	current US$
1967	205.10829914543717
1968	215.49732964141205
1969	231.79374802484776
1970	247.8678568231456
1971	261.04979085628656
1972	284.539927518335
1973	336.7050942097241
1974	429.8523498296563
1975	523.9741572045335
1976	589.4939067131043
1977	610.2356249873922
1978	660.1137952258983
1979	770.8816488130559
1980	918.4282302407559
1981	1040.8086527914327
1982	1014.5312561612269
1983	924.6732675237613
1984	807.0102913926033
1985	769.9579436976925
1986	790.1426244691656
1987	820.651160632791
1988	852.1704474281307
1989	822.7689486012014
1990	859.3087109590412
1991	900.6829522459536
1992	991.8377044116401
1993	1049.4505887024277
1994	1106.8158287550002
1995	1133.4848200930617
1996	1182.349243419662
1997	1216.2810368510243
1998	1183.4114549274182
1999	1194.1503225877855
2000	1258.5917421270692
2001	1276.7088553686742
2002	1246.8825839134327
2003	1324.3722855886642
2004	1501.3816964790115
2005	1716.5708469884146
2006	1923.3008150997844
2007	2170.8082840864586
2008	2428.176155933979
2009	2509.865396303988
2010	2734.720339755438
2011	2983.8430552561886
2012	3290.867301061274
2013	3417.294364814211
2014	3448.769178109002
2015	3327.5177529868506
2016	3289.273773301279
2017	3343.7590267872315
2018	3511.798002194776
2019	3573.6621650089537
2020	3300.2482486727436
2021	3636.8989501529654
2022	3991.7441805498133
2023	4207.694789691129