Year	current US$
2000	1287.00280762
2001	1336.21142578
2002	1486.171875
2003	1772.71337891
2004	1990.0748291
2005	2214.64697266
2006	2139.27539063
2007	2489.43115234
2008	3046.36206055
2009	3025.30883789
2010	3698.80834961
2011	3913.98706055
2012	3013.51464844
2013	3041.84155273
2014	3089.84301758
2015	2688.20629883
2016	2755.44848633
2017	2873.29614258
2018	3164.38842773
2019	3026.59741211
2020	3269.29736328
2021	3505.99145508