Year	constant 2015 US$
1977	173859572.45967832
1978	189468070.5782083
1979	196169784.2943925
1980	199706010.99233186
1981	197635408.44935486
1982	208488785.99192336
1983	220577244.78209174
1984	229435177.0650006
1985	244088067.43081594
1986	269574173.62990326
1987	285718308.2101624
1988	288709541.4712886
1989	298270193.55017924
1990	315833242.2070454
1991	321984888.2168623
1992	323700631.91942215
1993	323098079.6177823
1994	331114076.4128898
1995	335367000.7802861
1996	347629956.53275156
1997	360885923.61774963
1998	407441819.0675785
1999	435295924.6084271
2000	456816967.3015173
2001	463239419.5243115
2002	479666690.36121947
2003	513404250.3840152
2004	520133278.79500943
2005	547956364.2036587
2006	552627739.1413584
2007	603387963.810656
2008	621084903.342566
2009	601132671.7140149
2010	591057415.3736794
2011	599555830.2898089
2012	603254384.5135671
2013	611055305.3329084
2014	645769402.9789772
2015	665629629.6296296
2016	683030271.8337133
2017	709314786.2179409
2018	727651538.9203455
2019	741885925.0271671
2020	643406182.8484122
2021	654882714.0067489
2022	689518802.4446242
2023	722929687.4361677