Year	current US$
2000	27.038034034807804
2001	28.091439919850114
2002	27.854490678971242
2003	30.430067425578404
2004	33.98664101686729
2005	39.77414990759678
2006	44.191534399614056
2007	50.3464922351472
2008	56.89781310942075
2009	57.196189743212976
2010	64.46811284072155
2011	73.45449829366164
2012	78.09778410741541
2013	83.09527131119616
2014	83.52487825170522
2015	80.3981778601198
2016	79.96948847960243
2017	83.13689649290842
2018	87.68683903040046
2019	89.7354794296146
2020	89.12158758387976
2021	100.34317018373517