Year	current US$
2000	251.83313853832885
2001	255.8838833043583
2002	284.65513804565995
2003	358.564173841806
2004	418.13646591783885
2005	438.59390807294153
2006	477.6242395665038
2007	548.9780466359882
2008	615.5612274187465
2009	582.6169858808433
2010	582.991033616708
2011	642.7489555189801
2012	620.9111682318802
2013	650.5397606869159
2014	660.1730123844833
2015	569.9357674732196
2016	559.3310778310786
2017	588.9315788033732
2018	626.0825680020031
2019	627.4129850833558
2020	615.2377856980941
2021	701.4992633093135