Article: Namibia has free education for both Primary and secondary education levels. Grades 17 are primary level, grades 812 secondary. In 1998, there were 400,325 Namibian students in primary school and 115,237 students in secondary schools. The pupil-teacher ratio in 1999 was estimated at 32:1, with about 8% of the GDP being spent on education. Curriculum development, educational research, and professional development of teachers is centrally organised by the National Institute for Educational Development (NIED) in Okahandja.

Question: What was the pupil-teacher ratio in Namibia in 1999?
32:1