Year	constant 2015 US$
1977	323644588.1694757
1978	330537936.94694614
1979	361625076.8661008
1980	386016353.13492334
1981	395164013.26935035
1982	406733660.8120778
1983	434735561.3865052
1984	477638273.7236917
1985	508282003.6404037
1986	540267141.9678667
1987	563868477.7281358
1988	594284913.4419149
1989	621996175.5273463
1990	649196957.1897974
1991	662588684.4904617
1992	669560282.0918927
1993	718044743.8715932
1994	763477501.5168351
1995	726864504.172281
1996	762523611.0914121
1997	807740252.937144
1998	847281991.9785044
1999	875820455.9172323
2000	942596511.8313124
2001	922371053.9047666
2002	912701734.9439363
2003	958954242.1735259
2004	998816428.7796768
2005	1045329765.4224681
2006	1126082551.7496789
2007	1219992318.9056726
2008	1236756197.905586
2009	1064612511.3270139
2010	1007997624.1243726
2011	1000560259.7136531
2012	1032772692.244049
2013	1021378173.021614
2014	1038738233.5374166
2015	1050844444.4444444
2016	1079632559.392951
2017	1087159351.031054
2018	1135092344.908557
2019	1176269856.9841387
2020	913346356.207992
2021	989370677.8873055
2022	1113838473.8671021
2023	1167420287.6076562