Year	current international $
1990	17430
1991	17820
1992	18460
1993	19310
1994	20760
1995	20000
1996	21260
1997	22730
1998	23820
1999	24410
2000	26600
2001	28070
2002	29430
2003	30660
2004	32320
2005	33070
2006	34600
2007	35200
2008	36260
2009	34730
2010	36500
2011	37380
2012	37990
2013	39250
2014	40540
2015	41570
2016	43050
2017	45550
2018	46450
2019	49860
2020	46980
2021	53130
2022	57040
2023	58140