Year	1=extremely underdeveloped to 7=well developed and efficient by international standards
2007	6.66714021771697
2008	6.6138732604312
2009	6.5996762654
2010	6.5683688436
2011	6.6
2012	6.8
2013	6.8
2014	6.8
2015	6.76641877324958
2016	6.8
2017	6.8