Year	current US$
2000	704.94592285
2001	671.36853027
2002	222.64750671
2003	260.9826355
2004	310.21994019
2005	390.80447388
2006	453.63934326
2007	569.28839111
2008	742.90466309
2009	781.77801514
2010	980.1362915
2011	1202.56396484
2012	1361.99157715
2013	1415.21008301
2014	1280.61486816
2015	1525.05310059
2016	1258.3079834
2017	1494.83605957
2018	1216.10681152
2019	1016.23083496
2020	895.08465576
2021	1044.77270508