Year	constant 2015 US$
1976	1765.9136300829728
1977	1842.4928766232194
1978	1870.430316993094
1979	1855.3376890867949
1980	1722.4045931213345
1981	1644.9181397202033
1982	1683.0246233017797
1983	1700.1620977523282
1984	1758.2197371770496
1985	1832.8386329460595
1986	1946.0740986126762
1987	2312.057073367012
1988	2493.6151853713827
1989	2652.819157959326
1990	2765.6740031653194
1991	2874.1198019196227
1992	2973.0475878943143
1993	3095.0240448253685
1994	3230.369019918372
1995	3355.9099565656184
1996	3485.484556088497
1997	3617.4980099959052
1998	3800.1986105893584
1999	3904.660729988638
2000	4017.1153949197214
2001	4103.642782820248
2002	4210.015888951331
2003	4376.017081590935
2004	4710.9565798759295
2005	5021.355512052563
2006	5294.524921394731
2007	5505.62457688841
2008	5853.77441101731
2009	5960.286240671378
2010	6102.882405670111
2011	6245.72561748061
2012	6399.1395386793165
2013	6552.082385825411
2014	6712.258696316791
2015	6899.924226980578
2016	7098.849017553079
2017	7321.505742192747
2018	7552.742879442566
2019	7788.269659467627
2020	6595.107022286392
2021	6793.125267076632
2022	7038.4425443610735
2023	7233.165628900573