Year	constant 2015 US$
1980	2174.2531953154166
1981	2265.1259982853203
1982	2377.652389407321
1983	2426.4598942539565
1984	2545.58840358741
1985	2542.870378974694
1986	2591.9712447555517
1987	2736.076971988618
1988	2912.287572258384
1989	2834.106978365169
1990	3050.0692245218493
1991	2308.784284657298
1992	2277.701785612864
1993	2229.3605339914247
1994	2138.518477688507
1995	2547.1639980142672
1996	2649.5699635657948
1997	1803.4190792997813
1998	1765.5040631057027
1999	1901.327657640605
2000	2082.6993202424846
2001	2287.6432922617914
2002	2470.920770983169
2003	2652.328315347894
2004	2925.568781951504
2005	3163.29828080421
2006	3459.3967449816173
2007	3885.4257163284083
2008	4049.3795215780365
2009	3901.767364865858
2010	4020.464635066432
2011	4126.8072729845835
2012	4305.631232802928
2013	4162.510751045584
2014	4243.625482238586
2015	4391.168501430931
2016	4517.8582225983955
2017	4667.170042106755
2018	4875.705914566214
2019	5202.791146187213
2020	5204.654173633448
2021	5691.6753982035125
2022	6287.857927446282
2023	6662.807593618472