Year	current US$
2000	269.10098648
2001	282.7801659
2002	313.54778661
2003	394.91016522
2004	455.38816214
2005	529.42411497
2006	525.14581271
2007	560.39600715
2008	637.79233586
2009	604.64915437
2010	702.66801111
2011	775.91633051
2012	828.72210623
2013	897.81454881
2014	946.11097762
2015	911.26570624
2016	951.54449331
2017	958.13295495
2018	996.15060486
2019	1016.78235629
2020	934.5835492
2021	1126.49083444