Year	current US$
2000	39.83558665160854
2001	42.290136727336375
2002	48.533089301397915
2003	58.154386092686096
2004	73.86797870544392
2005	89.8759722949821
2006	107.54910142068381
2007	134.40922531936783
2008	164.7321178112864
2009	136.67892697725745
2010	153.59381563308776
2011	173.5637196549006
2012	181.52512580588268
2013	197.87864398237988
2014	187.9341924108587
2015	151.40863490298221
2016	149.51062725988928
2017	170.0413869136265
2018	172.00847717746052
2019	178.98849047484666
2020	167.97042531358315
2021	203.71837389964594