Proportion of working age (19 years to retirement age) population qualified to at least level 3 or higher. People are counted as being qualified to level 3 or above if they have achieved either at least 2 A-levels grades A-E, 4 A/S levels graded A-E, or any equivalent (or higher) qualification in the Qualifications and Credit Framework. Age group; 19 to 59 inclusive for women and 19-64 inclusive for men