Year 1=extremely underdeveloped to 7=well developed and efficient by international standards 2007 3.42194624531928 2008 3.35036578432343 2009 3.4970948291 2010 3.9046586802 2011 4 2012 4.2 2013 4 2014 3.6 2015 3.70597026241813 2016 3.7 2017 3.7