Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 4.8157011290733 2008 4.82697070866938 2009 4.927257784075 2010 5.01773897608571 2011 5.01071428571429 2012 5.02857142857143 2013 5.05 2014 5.04285714285714 2015 4.91134232393843 2016 4.91428571428572 2017 4.86071428571429