Year	current US$
1989	2256.0620147430736
1990	2424.4305455015055
1991	2586.3293905328273
1992	2783.2551848165376
1993	3253.482712957897
1994	3737.174012572958
1995	3975.0523498010375
1996	4248.514369731032
1997	4584.662140196895
1998	4555.674787859468
1999	4022.31544809584
2000	4380.788604926173
2001	4214.1553694596305
2002	3705.7314405382463
2003	3719.343771284985
2004	4241.031821803592
2005	5088.024759329006
2006	5907.589542866585
2007	6906.522543409612
2008	7967.126752687459
2009	7367.714539848609
2010	9094.539160607033
2011	10248.703610631772
2012	10244.311931346567
2013	10382.512840222806
2014	10464.886451280314
2015	8577.804211342
2016	8258.39951873525
2017	9110.901750542438
2018	8822.124386629184
2019	8596.417660876174
2020	7183.584543332691
2021	8304.280225156834
2022	9388.720969897753
2023	10439.526070455833