Graduates of the metropolitan examination during the Qing dynasty were assured influential posts in the officialdom. The Ministry of Personnel submitted a list of nominees to the emperor, who then decided all major appointments in the capital and in the provinces in consultation with the Grand Council. Appointments were generally on a three year basis with an evaluation at the end and the option for renewal. Officials rank three and above were personally evaluated by the emperor. Due to a population boom in the early modern era, qualified men far exceeded vacancies in the bureaucracy so that many waited for years between active duty assignments. Purchase of office became a common practice during the 19th century since it was very hard for qualified men to be appointed to one of the very limited number of posts. Even receiving empty titles with no active assignment required a monetary contribution.