Year	current international $
1990	5253.928344414001
1991	5322.301561551421
1992	4150.126860443493
1993	3217.9458748016896
1994	2603.8343864201493
1995	2317.7927988384745
1996	2366.839809394217
1997	2522.8437304076497
1998	2779.8069874417556
1999	3001.305342518654
2000	3382.08308668081
2001	3771.270579393898
2002	4160.21616652063
2003	4640.134372906131
2004	5160.472625325776
2005	6741.200964711324
2006	9244.406455209974
2007	11734.76418648615
2008	12972.442712952125
2009	13972.730905238173
2010	14680.874144623058
2011	14804.574450791106
2012	15994.146650183631
2013	17267.511891953738
2014	17563.61224543851
2015	15075.272634791103
2016	14535.802021063304
2017	14315.929643106028
2018	15282.999523229813
2019	16675.31793615578
2020	15163.570332728228
2021	20111.375695210878
2022	22533.494056850795
2023	23685.538639855273