Year	current US$
2000	0
2001	0
2002	14.19925526
2003	14.68788465
2004	11.42688723
2005	11.34268036
2006	15.66134248
2007	20.48459535
2008	35.2471408
2009	40.22669303
2010	25.62459954
2011	35.08200994
2012	4.81539478
2013	22.64384447
2014	26.53282966
2015	19.72890468
2016	19.90057563
2017	23.73241847
2018	14.17718031
2019	10.41085269
2020	9.35994307
2021	9.32243478