Year	current US$
2000	24.815857867983784
2001	24.41581983840779
2002	23.737704856466028
2003	26.933262400409912
2004	31.44204627210128
2005	37.47578762386742
2006	44.59713434577401
2007	54.74532769684991
2008	68.3147584989824
2009	75.06553246323055
2010	87.22784063884356
2011	103.1684924095552
2012	111.44089600159106
2013	121.23457303471648
2014	127.94009371093308
2015	128.3149202505836
2016	125.05428937693361
2017	134.53599899179534
2018	141.0133134461628
2019	144.4399797946541
2020	149.409257719915
2021	166.89027581407217