Year	constant 2015 US$
1991	851.0744992376522
1992	817.898546058252
1993	841.4143340071676
1994	825.0007923426975
1995	817.3998347310167
1996	861.8713312344507
1997	871.4097529009296
1998	873.8914326153202
1999	893.9604323022521
2000	874.4458460475648
2001	891.8318469987397
2002	1003.9814835117935
2003	1022.7745815125132
2004	1025.7372975290257
2005	1064.2745456560547
2006	1113.2581964183214
2007	1139.9592656022712
2008	1188.8218009242653
2009	1215.393440510283
2010	1270.231057995734
2011	1280.0250282372995
2012	1316.5419114320264
2013	1329.0276591282873
2014	1381.2908694243442
2015	1408.435469159576
2016	1432.7442210972379
2017	1468.3143867615984
2018	1480.4634647335834
2019	1480.4872191592028
2020	1494.207776704484
2021	1506.9480893138782
2022	1508.3006940509515