Year	% of total working-age population with intermediate education
1997	74.778
1998	74.779
1999	71.818
2000	73.973
2001	73.598
2002	73.044
2003	74.659
2004	73.112
2005	70.332
2006	73.287
2007	75.441
2008	76.261
2009	76.56
2010	77.492
2011	76.775
2012	76.151
2013	76.209
2014	74.551
2015	73.407
2016	74.71
2017	75.105
2018	74.948
2019	75.794
2020	66.939
2021	73.619
2022	76.26
2023	74.997