Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 3.49446231155779 2008 3.86998858780488 2009 4.3186629444 2010 4.2001349 2011 4 2012 4 2013 4.1 2014 4.2 2015 4.32789273870071 2016 4.3 2017 4.7