Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 2.63247411629852 2008 2.51819277818452 2009 2.6486275202 2010 2.9384436332 2011 2.7 2012 2.6 2013 2.7 2014 2.7 2015 2.70545754923315 2016 2.7 2017 3.1