Year	current US$
2000	504.51464603
2001	496.97832877
2002	510.97369324
2003	524.39045516
2004	573.10002006
2005	598.05029849
2006	642.42292824
2007	732.25449503
2008	801.5345031
2009	857.52171329
2010	953.71026206
2011	1050.37630732
2012	1107.7452582
2013	1206.40593604
2014	1202.76799651
2015	1206.11645274
2016	1290.54808153
2017	1344.70608569
2018	1320.55292801
2019	1364.68506997
2020	1349.87419348
2021	1469.07563691