Year	constant 2015 US$
1960	2720.063713893748
1961	2767.277393949475
1962	2722.748803847569
1963	2327.364902424486
1964	2529.594432213894
1965	2734.9567993947157
1966	2821.5245140781553
1967	2891.6869130548275
1968	2875.2245249731423
1969	3031.982116982892
1970	3119.1356072368067
1971	3177.2918159689166
1972	3037.459073015945
1973	3042.102663158549
1974	3241.628091014835
1975	3479.407198489795
1976	3495.5497353623423
1977	3368.3361011381867
1978	3276.3809714852414
1979	3191.8474189022913
1980	3231.7761260874645
1981	3273.776308746787
1982	2842.13213642091
1983	2653.395594149963
1984	2527.6432587002223
1985	2599.473245717828
1986	2590.016834892787
1987	2629.743232583837
1988	2550.163607155512
1989	2442.664558553472
1990	2386.057158639392
1991	2540.872047608827
1992	2734.6750006458
1993	2949.5630567646995
1994	3191.165758837486
1995	3342.172074646884
1996	3599.0482411742382
1997	3813.1947051042284
1998	3741.8045747868136
1999	3845.874084740831
2000	3788.2414054895144
2001	3870.729818516859
2002	3911.924386764975
2003	3885.970691246512
2004	3947.4383381114085
2005	3874.068140356752
2006	4079.9998822581015
2007	4384.073927164929
2008	4475.049401401237
2009	4654.515235694832
2010	4868.694513095511
2011	5147.160760793899
2012	5420.664847385646
2013	5592.737248763057
2014	5659.081802722288
2015	5668.42976474423
2016	5852.811650364093
2017	6038.253388236329
2018	6127.679106640335
2019	6348.68368035127
2020	9126.791424512458
2021	10852.574749209522
2022	17646.215923406824
2023	23325.12241611415