Year	constant 2015 US$
1977	273484916.35156673
1978	273484916.35156673
1979	338072344.6780646
1980	330784831.7750156
1981	306769641.5441846
1982	269466946.1589647
1983	266291640.2929849
1984	277136405.60235083
1985	297837165.7092677
1986	295048469.30878425
1987	326392553.6663201
1988	321963289.0535897
1989	357021222.93494916
1990	379892785.5153236
1991	399048663.9911004
1992	416324531.97749835
1993	410952474.43062174
1994	422911533.167878
1995	434554936.4029515
1996	465943676.8065052
1997	523238023.5167598
1998	522101251.6359633
1999	548150801.1250085
2000	587086001.140323
2001	569006026.2305117
2002	550334680.8674875
2003	547460304.2370477
2004	487963336.0965741
2005	518865326.7875152
2006	579575376.6122866
2007	648842868.8495238
2008	636610834.683183
2009	643487599.4594175
2010	674800022.4284897
2011	715866402.6359855
2012	759821429.4071758
2013	833653919.0784806
2014	875117690.2186891
2015	963238519.0693203
2016	1094405494.4075215
2017	1191709788.4056015
2018	1246438645.3080285
2019	1328509648.1990464
2020	1131635406.8749757
2021	1167213372.3472161
2022	1354729795.8847988
2023	1396347888.3406277