Year	% of male working-age population with basic education
1997	32.184
1998	31.564
1999	31.222
2000	31.182
2001	30.366
2002	29.376
2003	29.846
2004	28.678
2005	29.725
2006	29.893
2007	30.086
2008	30.725
2009	30.289
2010	31.146
2011	31.732
2012	33.181
2013	33.957
2014	31.767
2015	34.943
2016	36.73
2017	37.223
2018	38.411
2019	38.478
2020	38.225
2021	39.95
2022	39.654
2023	43.431