This is a list of countries by literacy rate. The figures represented are almost entirely collected by the UNESCO Institute for Statistics (UIS) on behalf of UNESCO with 2015 estimates based on people aged 15 or over who can read and write. Where data is not taken from this, notes are provided. The data is collated by mostly using suveys within the last ten years which are self-declared by the persons in question. UIS provide estimates based on these for the year 2015 with a Global Age-specific Literacy Projections Model (GALP).