2010 / 20180,3European Alternative Fuels Observatory (EAFO)1,04European Alternative Fuels Observatory (EAFO) 2011 / 20191,45European Alternative Fuels Observatory (EAFO)1,86European Alternative Fuels Observatory (EAFO) 2012 / 20203,08European Alternative Fuels Observatory (EAFO)5,38European Alternative Fuels Observatory (EAFO) 2013 / 20215,25European Alternative Fuels Observatory (EAFO)8,99European Alternative Fuels Observatory (EAFO) 2014 / 202212European Alternative Fuels Observatory (EAFO)12,05European Alternative Fuels Observatory (EAFO) 2015 / 202316,11European Alternative Fuels Observatory (EAFO)14,57European Alternative Fuels Observatory (EAFO) 2016 / 202414,89European Alternative Fuels Observatory (EAFO)13,62European Alternative Fuels Observatory (EAFO) 2017 / 202519,58European Alternative Fuels Observatory (EAFO)17,37European Alternative Fuels Observatory (EAFO)