Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 4.41176470588235 2008 4.23414193019302 2009 4.1996207 2010 4.1874191362 2011 4.1 2012 4 2013 4.5 2014 4.3 2015 4.25990581881622 2016 4.3 2017 4.7