Year	current international $
1990	5840
1991	4730
1992	2630
1993	1870
1994	1730
1995	1830
1996	2200
1997	2710
1998	2940
1999	3130
2000	3200
2001	3460
2002	3730
2003	4250
2004	4700
2005	5320
2006	6100
2007	6980
2008	7250
2009	7090
2010	7580
2011	8330
2012	9960
2013	10600
2014	11620
2015	11990
2016	12470
2017	13060
2018	14460
2019	16010
2020	16000
2021	17740
2022	20880
2023	23040