Year	current US$
2000	104.53012344
2001	111.33731015
2002	120.24394101
2003	118.3231064
2004	120.55476494
2005	124.48042266
2006	125.4754981
2007	137.3735807
2008	153.30820013
2009	162.63203162
2010	167.96671941
2011	157.35712314
2012	186.4278808
2013	190.44075315
2014	182.59319226
2015	186.57107259
2016	198.75636258
2017	215.23366355
2018	235.21366557
2019	249.04155956
2020	270.59624382
2021	303.58385908