Year	% of total working-age population with intermediate education
2003	81.001
2004	76.154
2006	80.522
2010	81.026
2011	71.031
2012	80.091
2013	74.672
2014	72.14
2015	76.411
2016	72.499
2017	73.053
2018	73.609
2019	71.624
2021	75.974
2022	71.611