Traditional Mongolian tents called ‘gers’ are seen on a hill in an area known as a Ger District in Ulan Bator. Approximately 60 percent of the population of Ulan Bator live in settlements known as ger districts and in many cases residents have limited access to basic services such as water and sanitation. According to a 2010 National Population Center census, every year between thirty and forty thousand people migrate from the countryside to the capital Ulan Bator. Ger Districts in the city have been expanding rapidly in recent years.