Year	% of primary school age children
1971	50.21698
1972	52.78938
1973	55.08126
1977	51.47923
1978	51.41989
1981	56.61351
1982	58.42162
1983	60.29616
1986	63.54782
1987	52.83386
1988	50.48016
1989	50.49021
1990	59.56512
1991	54.79732
2005	47.62176
2006	47.84438
2007	55.57831
2008	64.14315
2009	64.27065
2011	64.17063