0122-7238 0122-7238 S0122-72382024000200015 10.19053/uptc.01227238.17943 Colombia El Salvador Colombia 00 12 2024 00 12 2024 26 43 15 35

1993 2005 2016 European Commission 2018 Eurostat 2018 2020 20 209-47 2021 23 37 37 185-205 2009 26 2 2 91-108 OECD 2017 OECD 2018 OECD 2021 OECD 2019 OECD 2019 2005 7 7 101-38 UNESCO 2017 UNESCO UNESCO Publishing 2014 UNESCO 2020 2020 UNESCO Institute for Statistics UIS 2015 UNESCO Institute for Statistics UIS 2020 UNESCO Institute for Statistics UIS 2020 61 61 1-6