Year	% of total working-age population with intermediate education
1997	74.829
1998	72.985
1999	72.814
2000	72.263
2001	71.106
2002	68.217
2003	67.412
2004	68.251
2005	65.397
2006	66.205
2007	64.572
2008	63.283
2009	62.86
2010	64.44
2011	63.782
2012	64.019
2013	63.5
2014	63.832
2015	63.679
2016	62.626
2017	63.82
2018	63.827
2019	62.574
2020	61.693
2021	57.055
2022	56.949
2023	56.604