Year	current international $
1990	17760
1991	18370
1992	19020
1993	19280
1994	20050
1995	20830
1996	21530
1997	22510
1998	23660
1999	24790
2000	26500
2001	27990
2002	28820
2003	28540
2004	29460
2005	31020
2006	33110
2007	34800
2008	35860
2009	35470
2010	36730
2011	38430
2012	38500
2013	40410
2014	41010
2015	41730
2016	43830
2017	45580
2018	47620
2019	52340
2020	49880
2021	55020
2022	58610
2023	62130