Year	constant 2015 US$
1991	946.2143534845159
1992	988.6630595734308
1993	1001.1223801704562
1994	1027.719967315956
1995	993.9587611411255
1996	1065.5866876200096
1997	1012.5974889646584
1998	1052.6321475187676
1999	1060.1432988529718
2000	1037.0527273123605
2001	1106.9688616807987
2002	1041.3590713744452
2003	1150.5275688448248
2004	1169.8207201863215
2005	1244.3185476064236
2006	1258.839554913097
2007	1309.2089580745524
2008	1283.6550938532318
2009	1258.2826179515255
2010	1354.4872283077966
2011	1485.852130431842
2012	1558.4678149262863
2013	1649.0983718761875
2014	1654.0797310235037
2015	1676.0931694012233
2016	1808.3093525371253
2017	1947.2965041273658
2018	2012.319516975618
2019	2123.3941342972266
2020	2038.0015256490253
2021	2069.243581909992
2022	2116.1756062427426