Year	constant 2015 US$
1981	222218177.73333263
1982	232754131.3287683
1983	237368255.54409614
1984	241494646.2141716
1985	257332984.34429795
1986	262784997.57493922
1987	270630805.7616982
1988	265537880.2721177
1989	266573230.55138332
1990	261124229.97711393
1991	277875212.4343911
1992	278575390.3463841
1993	288988692.7206568
1994	303300919.34311444
1995	325680086.3377627
1996	331560341.96400315
1997	335616815.69913846
1998	343868824.70636016
1999	356629387.4741471
2000	359753425.4701885
2001	373240314.06902117
2002	391335052.3235558
2003	400367243.3639951
2004	390715587.78918105
2005	391032199.8433887
2006	390450987.8705214
2007	391509482.1126795
2008	410106846.7316446
2009	388784944.6014051
2010	391908793.4624081
2011	418630217.23514724
2012	422075973.9314318
2013	423394150.5812523
2014	431941210.248309
2015	437003078.563584
2016	465718553.04570806
2017	481191737.817353
2018	482352506.8315019
2019	485760247.3850769
2020	488133892.1164417
2021	475112890.400839
2022	465555896.912722