Year	1=extremely underdeveloped to 7=well developed and efficient by international standards
2007	4.07405368856272
2008	4.5538432538822
2009	4.7328798602
2010	4.7379050184
2011	4.9
2012	5.2
2013	5.1
2014	4.9
2015	4.8549087506352
2016	4.9
2017	4.8