Year	% of total working-age population with intermediate education
1987	56.18
1988	57.712
1989	57.625
1990	57.931
1991	57.314
1992	57.304
1993	57.269
1994	58.358
1995	58.925
1996	59.327
1997	59.13
1998	63.157
1999	62.605
2000	62.508
2001	61.609
2002	61.403
2003	61.669
2004	63.323
2005	62.934
2006	63.201
2007	62.63
2008	62.318
2009	62.751
2010	63.036
2011	62.195
2012	61.923
2013	61.288
2014	61.089
2015	60.281
2016	60.4
2017	60.461
2018	59.942
2019	59.712
2020	58.4
2021	58.199
2022	59.669
2023	59.772