Despite progress in terms of the number of school years completed by people aged 15 and over - an average of 5.2 years in 1992 and of 6.1 years in 1999, there are great regional and even racial disparities.
尽管15岁及15岁以上的人的在学年数有所增加，1992年平均为5.2年，但在区域或种族之间有着巨大的差距。