If you look at the red line here, what you're going to see is that in 1975, just nine percent of kids were in secondary school education in sub-Saharan Africa.
Apabila Anda melihat garis merah di sini, Anda akan melihat bahwa di tahun 1975, hanya 9% anak-anak yang mengenyam pendidikan sekolah menengah di Sub-Sahara Afrika.