Year	current international $
1990	9460
1991	7880
1992	7210
1993	6770
1994	7250
1995	8050
1996	8800
1997	9530
1998	9890
1999	9730
2000	10470
2001	11410
2002	12800
2003	13240
2004	14440
2005	15080
2006	17170
2007	19120
2008	20330
2009	19510
2010	19400
2011	20460
2012	20810
2013	21800
2014	22140
2015	23590
2016	24980
2017	27300
2018	28990
2019	32240
2020	31300
2021	37240
2022	42510
2023	45950