Year	1=extremely underdeveloped to 7=well developed and efficient by international standards
2007	4.3
2008	3.76417430588235
2009	3.283275773
2010	3.4115656422
2011	3.7
2012	3.6
2013	3.9
2014	4.2
2015	4.17601783661869
2016	4.2
2017	4.1