Year	constant 2015 US$
1991	829.6333768882873
1992	801.6841620482304
1993	803.5090485516067
1994	801.0525380488115
1995	826.5816359723258
1996	839.3218844426325
1997	845.1337739059991
1998	855.849693584789
1999	863.1284914076466
2000	860.6030114419082
2001	872.7416236958946
2002	873.226614657542
2003	888.5988608920642
2004	915.2589049689701
2005	943.5398237251933
2006	989.3326641909022
2007	1014.7013865555501
2008	1017.1428053637261
2009	1010.854765859598
2010	1040.7978922914688
2011	1038.0664931450076
2012	1058.8086155290162
2013	1083.6391620873892
2014	1092.8257036244433
2015	1117.064434132279
2016	1115.330750500955
2017	1118.8899385891955
2018	1123.4124228989442
2019	1131.2683961178338
2020	1080.246656600664
2021	1108.9026605557788
2022	1121.957923189378
2023	1123.8550884987712