Year	current international $
2000	34.72245933014388
2001	38.139403668534015
2002	45.15688202631311
2003	54.65533475271968
2004	61.39092361895027
2005	70.92781943210983
2006	83.3151965126507
2007	99.21885571531493
2008	123.03259606225032
2009	156.4629153039748
2010	170.58769701800966
2011	197.69223815179265
2012	233.96633686096052
2013	260.124887353462
2014	285.545028560278
2015	312.45954797069857
2016	320.4589622333084
2017	334.7058466735186
2018	367.4920042700761
2019	405.3466760531316
2020	436.21294447855007
2021	473.5462945993465