Year	% of total working-age population with intermediate education
1997	69.462
1998	67.377
1999	65.371
2000	69.199
2001	68.301
2002	67.867
2003	67.823
2004	66.866
2005	67.006
2006	67.259
2007	66.175
2008	64.497
2009	63.863
2010	63.7
2011	63.466
2012	64.148
2013	64.282
2014	63.373
2015	63.548
2016	63.875
2017	64.143
2018	63.942
2019	64.117
2020	63.484
2021	64.849
2022	65.078
2023	64.697