Year	current US$
1990	1725.1765589978363
1991	1359.9365278040286
1992	1107.423693086254
1993	920.7929101947129
1994	333.7831793425357
1995	497.68284663372765
1996	712.9536456231288
1997	907.1487832355195
1998	1000.4168349971909
1999	1128.3988840507334
2000	1332.2102166154748
2001	1382.7674599413012
2002	1602.5640389207967
2003	2031.402483314946
2004	2451.5773012843856
2005	2741.0801748243057
2006	3170.1747833718437
2007	3936.9317474838867
2008	4846.790941178941
2009	4542.311673323284
2010	4506.932352055328
2011	4980.904688389951
2012	4688.345823177084
2013	5025.241752940615
2014	5196.970084151072
2015	4654.608620388961
2016	4917.263765963062
2017	5327.39230422044
2018	6024.493149796546
2019	6094.724823223109
2020	6095.10423658487
2021	7237.274462506652
2022	7587.588173460749
2023	8426.091110191548