In 2009, the adult literacy rate in Burundi was estimated to be 67% (73% male and 61% female), with a literacy rate of 77% and 76%, respectively, for men and women between the ages of 15 to 24. By 2015, this had increased to 85.6% (88.2% male and 83.1% female). Literacy among adult women has increased by 17% since 2002. Burundi's literacy rate is relatively low due to low school attendance and because literacy in Kirundi only provides access to materials printed in that language, though it is higher than many other African countries. Ten percent of Burundian boys are allowed a secondary education.