As of 2016[update], according to Statistics Sweden, 35% of Syria-born individuals aged 25 to 64 have attained a primary and lower secondary education level (37% men, 34% women), 22% have attained an upper secondary education level (21% men, 23% women), 21% have attained a post-secondary education level of less than 3 years (21% men, 22% women), 15% have attained a post-secondary education of 3 years or more (16% men, 14% women), and 6% have attained an unknown education level (6% men, 7% women).[10]