Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 3.65850499763092 2008 4.01024969652856 2009 4.2998275478 2010 4.5002914706 2011 4.3 2012 4 2013 4.1 2014 4 2015 3.87977787143779 2016 3.9 2017 3.6