Year	current international $
2000	51.6461116001051
2001	54.5443518646816
2002	46.2614515388576
2003	36.4367763448354
2004	62.3837655162115
2005	82.9159392582691
2006	102.76288240357
2007	122.354350564366
2008	145.364848845662
2009	135.058064039407
2010	128.922087531582
2011	120.242836669216
2012	144.269123177644
2013	152.517732862395
2014	155.048294397527
2015	153.471791001215
2016	164.272521880675
2017	169.104795346028
2018	174.928578768091
2019	181.979759015383
2020	190.92161430702
2021	210.85181513982