Year	current international $
1990	1390
1991	1560
1992	1730
1993	1930
1994	2080
1995	2230
1996	2420
1997	2520
1998	2460
1999	1590
2000	1770
2001	1950
2002	2220
2003	1810
2004	2090
2005	2570
2006	3880
2007	5420
2008	8340
2009	6240
2010	7340
2011	9060
2012	8860
2013	7610
2014	6580
2015	5460
2016	4630
2017	5000
2018	5200
2019	7130
2020	8420
2021	7590
2022	5940
2023	5880