Year	current international $
2000	23.40388259518853
2001	26.35888424066355
2002	29.5291112292992
2003	32.40051720335787
2004	34.61387159459973
2005	36.58290897365181
2006	39.665702778662656
2007	43.52707791900676
2008	46.14731747998853
2009	48.43235545455833
2010	48.95556613560549
2011	49.23694592250149
2012	51.754421063441065
2013	58.537139519800505
2014	62.54622997903003
2015	67.6048559100814
2016	71.01838824482459
2017	69.11452950994553
2018	69.15198532561969
2019	73.35531048127233
2020	73.0687176915078
2021	75.14318489775778