Year	constant 2015 US$
1991	851.074499237652
1992	817.8985460582522
1993	841.4143340071676
1994	825.0007923426978
1995	817.3998347310165
1996	861.871331234451
1997	871.4097529009296
1998	873.8914326153205
1999	893.9604323022525
2000	874.4458460475652
2001	891.8318469987396
2002	1003.9814835117935
2003	1022.7745815125132
2004	1025.7372975290257
2005	1064.2745456560544
2006	1113.2581964183212
2007	1139.959265602271
2008	1188.821800924265
2009	1215.393440510283
2010	1270.2310579957339
2011	1280.0250282372995
2012	1316.5419114320266
2013	1329.0276591282873
2014	1381.290869424344
2015	1408.4354691595759
2016	1432.7442210972386
2017	1468.3143867615984
2018	1480.4634647335836
2019	1480.487219159203
2020	1494.2077767044843
2021	1506.9480893138784
2022	1508.3006940509513