Year	constant 2015 US$
1960	341.7884136508651
1961	318.4580506818801
1962	345.9809972865249
1963	305.2399371787571
1964	261.2702794246918
1965	272.4880225327664
1966	283.5103142506525
1967	294.1135404182464
1968	305.0686711444746
1969	328.26222300790334
1970	337.3811376862384
1971	331.32982072552585
1972	322.547985715103
1973	323.9322212625688
1974	318.99656304592645
1975	303.3067365702425
1976	352.1369539257666
1977	349.0188572434956
1978	370.2216203305738
1979	401.7260989138646
1980	423.2442693288405
1981	430.3086746384892
1982	421.7534759252135
1983	431.2235517704461
1984	399.4825475543524
1985	403.0931110102797
1986	410.03320195056904
1987	395.4487238352383
1988	400.27596559560624
1989	389.5970670082564
1990	371.0035704078877
1991	353.6683200211026
1992	366.0506001095774
1993	325.8355093679262
1994	190.33074780473575
1995	304.7015244777682
1996	290.91824598023186
1997	290.1160588952384
1998	305.92405930432477
1999	315.45343625732386
2000	337.62744402870027
2001	361.1985043014078
2002	401.602905330255
2003	401.07354406869064
2004	419.9713756701882
2005	447.42467632035675
2006	475.8576957524688
2007	498.5687689824045
2008	539.5510116038099
2009	558.3242715138429
2010	583.8535943535601
2011	614.3536916883825
2012	651.2253550774398
2013	665.9278469251021
2014	690.3858444776238
2015	733.8133792773666
2016	758.8602360574207
2017	769.2862018790465
2018	814.7199603839024
2019	870.6240987505411
2020	821.3292613795643
2021	889.1679909291537
2022	939.7281495352714
2023	994.225755125072