Year	current international $
1990	7310
1991	7150
1992	7350
1993	7270
1994	7170
1995	7370
1996	7660
1997	7810
1998	8210
1999	8430
2000	8800
2001	9330
2002	9760
2003	10480
2004	11030
2005	11780
2006	12400
2007	13240
2008	13670
2009	13660
2010	14330
2011	14670
2012	14450
2013	14290
2014	14580
2015	13690
2016	13520
2017	13520
2018	13620
2019	13800
2020	12640
2021	14400
2022	15650
2023	16790