Year	current US$
2000	476.66873114493177
2001	488.82351981197587
2002	519.3182528389289
2003	583.8874213520346
2004	641.7802647860557
2005	680.860556195913
2006	722.5432642282836
2007	790.6730177266237
2008	857.2209584672034
2009	867.5733599442772
2010	904.7691857153993
2011	979.3171800839536
2012	987.7303740938459
2013	1002.3844055658709
2014	1026.0814448961708
2015	984.0591449557705
2016	1006.4650597410938
2017	1043.9416233239688
2018	1086.5981795411294
2019	1104.4398250027562
2020	1179.6502672607967
2021	1265.624726369281