Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 3.28140137090632 2008 3.35039492435928 2009 3.752489228 2010 3.9974099911 2011 4 2012 4 2013 4.3 2014 4.6 2015 4.54886001951901 2016 4.5 2017 4.6