Year	current US$
1970	152.2776484731781
1971	160.65303587440434
1972	175.55032415714982
1973	216.43944854343277
1974	259.35130755310985
1975	279.36095384481445
1976	291.0830505519009
1977	317.97358575756533
1978	336.52184983938145
1979	377.54253890051507
1980	430.7202464615687
1981	490.1059226676965
1982	473.38179293708646
1983	447.035025300226
1984	444.64910389983925
1985	451.6416316591168
1986	463.9534270562171
1987	459.2325429618935
1988	489.8336393280996
1989	512.3020180353901
1990	581.1205567464897
1991	595.7467798343774
1992	634.2870059856343
1993	684.1996627738149
1994	760.6632246923558
1995	852.7363699387421
1996	929.3868438462416
1997	969.507103429112
1998	943.3220807267461
1999	913.0018003709363
2000	963.3401195088007
2001	949.4130616819789
2002	955.9611952423481
2003	1049.2483680716903
2004	1202.3361598843994
2005	1385.5464077046822
2006	1612.5412042786436
2007	1955.9403656196826
2008	2248.2964876264527
2009	2272.16334600795
2010	2675.7579787872996
2011	3010.176163742531
2012	3184.240143905913
2013	3323.9061937554748
2014	3456.026898824784
2015	3336.2641785101523
2016	3340.142391669632
2017	3602.7375223924982
2018	3707.7693480212806
2019	3748.9117205244615
2020	3560.164234297054
2021	4068.5727518615786