 Although marginally behind the UK average, Glasgow still has a higher employment rate than Birmingham, Liverpool and Manchester.In 2008 the city was ranked at 43 for Personal Safety in the Mercer index of top 50 safest cities in the world.The Mercer report was specifically looking at Quality of Living, yet by 2011 within Glasgow, certain areas were (still) "failing to meet the Scottish Air Quality Objective levels for nitrogen dioxide (NO2) and particulate matter (PM10)".