Ano, Distrito,Média estadual
2009,21.4,20.8
2010,20.2,21
2011,20.4,21.1
2012,20.9,21
2013,21.4,21.2
2014,21.5,21.4
2015,22.2,21.2
2016,24.1,21.1
2017,23.1,20.2
2018,20,20
2019,19.4,21.9