Plovdiv is one of the oldest cities in Europe. It is claimed that the city is a contemporary of Troy and Mycenae, but it is more ancient than Rome, Athens and Constantinople. According to the data of NSI (National Institute of Statistics) the people who actually live in Plovdiv are 346,790. The Municipality of Plovdiv is engaged with the development and building of the educational system, with the integration and support of the children and the elderly, as well as the disadvantaged people through non-formal education.