Year	current international $
1990	5860
1991	5720
1992	5920
1993	6310
1994	6870
1995	7570
1996	8220
1997	8870
1998	9420
1999	9980
2000	10630
2001	11090
2002	11770
2003	12170
2004	12930
2005	13620
2006	14760
2007	16230
2008	17920
2009	18640
2010	20190
2011	21850
2012	22690
2013	23440
2014	24350
2015	25820
2016	27070
2017	28690
2018	30680
2019	34010
2020	34940
2021	38630
2022	44880
2023	47380