Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 5.32581315725116 2008 5.35816253552055 2009 5.5494788366 2010 5.8397259785 2011 6 2012 6 2013 5.8 2014 5.7 2015 5.39883113521161 2016 5.4 2017 5.1