Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 5.75820219408773 2008 5.82340478795769 2009 5.63975223535 2010 5.61105443025 2011 5.65 2012 5.65 2013 5.6 2014 5.6 2015 5.59344178399576 2016 5.6 2017 5.6