Year	% of total working-age population with basic education
1995	47.806
1996	45.417
1997	44.326
1998	43.621
1999	43.779
2000	43.328
2001	42.266
2002	43.666
2003	43.188
2004	35.216
2005	36.226
2006	36.822
2007	38.557
2008	37.771
2009	37.654
2010	36.928
2011	37.433
2012	36.817
2013	36.335
2014	36.863
2015	36.403
2016	37.574
2017	37
2018	36.994
2019	36.93
2020	37.284
2021	38.075
2022	38.037
2023	38.93