Year	% of male working-age population with basic education
1997	42.154
1998	41.403
1999	39.971
2000	36.202
2001	36.963
2002	34.055
2003	38.669
2004	40.346
2005	35.363
2006	41.387
2007	41.956
2008	41.936
2009	41.424
2010	40.849
2011	45.301
2012	44.489
2013	44.463
2014	48.114
2015	47.602
2016	50.055
2017	52.508
2018	51.986
2019	47.423
2020	48.246
2021	43.683
2022	46.023
2023	45.838