Year	% of primary school age
1973	59.5230598449707
1974	57.6577415466309
1975	56.1803398132324
1976	54.7114410400391
1977	51.9203300476074
1978	48.5121116638184
1979	44.7174797058105
1980	43.076961517334
1981	41.7696990966797
1982	41.3638801574707
1983	40.8579788208008
1984	41.1661186218262
1985	42.3634796142578
1986	44.0572509765625
1987	45.3987808227539
1988	46.1357383728027
1989	47.3274002075195
1990	47.5493202209473
1991	46.6498603820801
1992	47.2015914916992
1993	46.5093803405762
1994	46.2481307983398
1995	45.5885009765625
1996	47.6337890625
1997	44.5679817199707
1998	43.9058685302734
1999	43.2535209655762
2000	41.3640785217285
2001	39.1615295410156
2002	36.296028137207
2003	32.7379608154297
2004	30.8034591674805
2005	29.6508502960205
2006	27.9737796783447
2007	25.8317108154297
2008	25.200080871582
2009	24.5422306060791
2010	25.14146
2011	23.98103
2012	23.29786
2013	23.28773
2014	22.53817
2015	22.66607
2016	22.35592
2017	22.37946
2018	22.10174