Year	% of primary school age
1975	55.7126808166504
1976	54.8423004150391
1977	52.7342681884766
1978	50.480640411377
1979	47.5840682983398
1980	45.3856201171875
1981	43.369270324707
1982	41.9696998596191
1983	41.5517616271973
1984	42.1172218322754
1985	43.2647399902344
1986	44.8726196289063
1987	45.9073791503906
1988	46.6626815795898
1989	46.0881309509277
1990	46.7404098510742
1991	45.8455505371094
1992	46.1024017333984
1993	45.6701202392578
1994	45.3616409301758
1995	44.6274108886719
1996	45.7733688354492
1997	43.0039215087891
1998	42.104850769043
1999	41.3379707336426
2000	39.0234909057617
2001	36.9474792480469
2002	35.1828804016113
2003	32.6299018859863
2004	30.8254508972168
2005	28.593090057373
2006	26.7317905426025
2007	24.0430297851563
2008	22.9949703216553
2009	22.4641609191895
2010	23.20667
2011	21.71824
2012	21.05217
2013	20.47058
2014	20.03107
2015	20.04984
2016	19.90651
2017	19.75185
2018	19.54012