Year	current US$
2000	3559.81982422
2001	3763.38452148
2002	4211.72949219
2003	5018.52734375
2004	5608.703125
2005	5673.93994141
2006	5671.98144531
2007	6154.703125
2008	7120.65283203
2009	7297.37988281
2010	7640.44921875
2011	9138.3671875
2012	8753.8203125
2013	9118.18945313
2014	9307.96875
2015	9082.45019531
2016	9078.75878906
2017	9119.96972656
2018	9212.43261719
2019	9341.0625
2020	10085.45605469
2021	10897.45019531