Year	current US$
2000	0
2001	0.00396734
2002	0.42350788
2003	0.3032368
2004	0.50945115
2005	0.87441623
2006	1.01311557
2007	1.26022429
2008	2.64919448
2009	1.83856072
2010	1.74870196
2011	1.84538658
2012	1.03620381
2013	0.79632163
2014	0.75172664
2015	1.10929862
2016	0.75804558
2017	0
2018	0.1273549
2019	0.67979366
2020	0.36947581
2021	0.60387727