Year	constant 2015 US$
2002	951.4807338063218
2003	976.7810451532738
2004	1009.0361824464436
2005	1054.6378950467256
2006	1117.1208936351259
2007	1115.0808137002216
2008	1057.7346523723304
2009	1088.0115902430466
2010	1115.3214126246
2011	1140.2106544035519
2012	1172.9924744227867
2013	1193.9674201574526
2014	1220.0252312691857
2015	1236.4980330072044
2016	1239.3451178197379
2017	1254.3015583739118
2018	1279.3183352101933
2019	1300.3792785244466
2020	1242.2429666959654
2021	1267.3678438238542