Year	% of male working-age population with basic education
1997	38.999
1998	37.863
1999	36.148
2000	34.937
2001	35.17
2002	33.493
2003	31.293
2004	31.176
2005	31.374
2006	30.74
2007	30.076
2008	29.631
2009	29.195
2010	28.758
2011	28.738
2012	28.972
2013	28.418
2014	27.97
2015	28.064
2016	26.876
2017	26.364
2018	25.833
2019	27.386
2020	27.239
2021	27.891
2022	26.574
2023	24.934