Year	current international $
1990	7614.3427734375
1991	7171.91650390625
1992	6590.15673828125
1993	5785.18603515625
1994	4578.23583984375
1995	4136.5244140625
1996	3824.8125
1997	3808.59814453125
1998	3812.138671875
1999	3894.8974609375
2000	4260.8017578125
2001	4790.212890625
2002	5173.30322265625
2003	5824.55126953125
2004	6737.595703125
2005	7214.943359375
2006	8054.83203125
2007	9006.3564453125
2008	9436.7939453125
2009	8093.63427734375
2010	8561.1552734375
2011	9246.76953125
2012	9681.5224609375
2013	11056.5419921875
2014	10664.6240234375
2015	10064.8427734375
2016	11011.970703125
2017	11686.857421875
2018	12708.798828125
2019	14380.861328125
2020	15716.841796875
2021	18040.345703125
2022	16080.228515625
2023	18007.486328125