Year	current international $
1990	6912.793825411635
1991	7133.956945183358
1992	7305.233555811062
1993	7574.736574607714
1994	7839.431276247932
1995	8371.100374255679
1996	8792.538987099055
1997	8987.468495643192
1998	9359.90741216096
1999	9493.269880837695
2000	10225.318312629579
2001	10655.00829546717
2002	11124.240340688528
2003	11599.7150803127
2004	12263.344360438601
2005	13070.746309005242
2006	14168.200686664253
2007	15309.548568484433
2008	16015.558604675824
2009	15361.116526964255
2010	15794.236176378023
2011	16520.411731907498
2012	17468.122097624004
2013	17807.29922118499
2014	17994.83933794572
2015	17704.00180887395
2016	18101.707157872897
2017	19295.864044434522
2018	20111.27829450312
2019	21608.35435899679
2020	20250.876498191148
2021	22215.118704039352
2022	25265.476754586467
2023	27122.6871639135