_id año valor 1 2012 27.10000000000000142108547152020037174224853515625 2 2013 26.39999999999999857891452847979962825775146484375 3 2014 28.60000000000000142108547152020037174224853515625 4 2015 30.199999999999999289457264239899814128875732421875 5 2016 33.2000000000000028421709430404007434844970703125 6 2017 32.5