Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 2.69930339889579 2008 3.0225190104336 2009 3.2132310853 2010 3.497826567 2011 3.7 2012 3.3 2013 3.4 2014 3.5 2015 3.62183420876844 2016 3.6