of secondary school would have 37.2 million pupils in 2020, or 2.5 times the current number. If all the pupils finishing primary school could continue with their education, the number of pupils in the first year of secondary school would reach 62.9 million by 2020, a multiplication by 4.2 over the period." Behind the regional averages, there are still enormous disparities between the countries, and even between the different zones and regions within countries, which means that it is not possible to "[…] identify conditions that apply uniformly to education across the different countries of sub-Saharan Africa." While some countries have lower demographic growth, others enjoy a more satisfactory level of school enrolment. Only a few countries are falling seriously behind in education at the same time as having to address a steady growth in their school-age population: Niger, Eritrea, Burundi, Guinea-Bissau, Uganda and to a lesser extent Burkina Faso, Chad, Mali, Mozambique, Rwanda, Senegal and Malawi are particularly affected by this dual constraint. The EFA 2012 report highlights great disparities between the sub-Saharan African countries: the percentage of children excluded from primary school is only 7% in Gabon and 14% in Congo compared to over 55% in Burkina Faso and Niger. The gap in terms of the proportion of those excluded from the first year of middle school is even wider, with 6% in Gabon compared to 68% in Burkina Faso and 73% in Niger. The majority of out-of-school populations are to be found in countries where there is conflict or very weak governance. At the Dakar Forum, the 181 signatory countries of the Dakar Framework for Action identified armed conflict as well as internal instability within a country as "a major barrier towards attaining Education for All" (EFA) – education being one of the sectors to suffer most from the effects of armed conflict and political instability. In the 2011 EFA Global Monitoring Report, UNESCO pointed out that the countries touched by conflict showed a gross rate of secondary school admissions almost 30% lower than countries of equivalent revenue that were at peace. Conflicts also affect the rate of literacy of the population. At the global level, the rate of literacy among adults in countries touched by conflict was 69% in 2010 compared to 85% in peaceful countries. Twenty states in sub-Saharan Africa have been touched by conflict since 1999. Those countries affected by armed conflict, such as