Year	current international $
1990	4740
1991	4980
1992	5440
1993	5830
1994	6150
1995	6360
1996	6450
1997	6760
1998	7090
1999	7210
2000	7440
2001	7730
2002	7980
2003	8350
2004	8860
2005	9410
2006	10350
2007	11380
2008	12070
2009	11710
2010	12340
2011	12970
2012	13800
2013	14450
2014	15480
2015	16520
2016	18110
2017	19110
2018	20010
2019	21590
2020	20450
2021	22150
2022	24240
2023	25800