Year	current US$
2000	0.13357644
2001	0.15227576
2002	0.25087791
2003	0.32555222
2004	0.83273476
2005	0.96689122
2006	0.5404608
2007	0.62801632
2008	1.17768488
2009	0.66663331
2010	0.23982568
2011	1.36762545
2012	0.99489021
2013	0.86006572
2014	0.95263744
2015	0.46969178
2016	1.05423648
2017	0.7524262
2018	0.85683021
2019	1.33995787
2020	0.66001701