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Historical Values
Year Value
2001 NA
2002 NA
2003 NA
2004 NA
2005 NA
2006 NA
2007 NA
2008 NA
2009 NA
2010 NA
2011 fewer than 100 (2009 est.) country comparison to the world: 144
2012 fewer than 100 (2009 est.) country comparison to the world: 144
2013 fewer than 100 (2009 est.) country comparison to the world: 146
2014 fewer than 100 (2009 est.) country comparison to the world: 129
2015 NA
2016 NA
2017 <100 (2016 est.)
2018 <100 (2017 est.)
2019 <100 (2018 est.)
2020 <100 (2019 est.)
2021 <100 (2020 est.)