Plovdiv canal in the country. In that period, Plovdiv became the birthplace of Bulgaria's movement for democratic reform, which by 1989 had garnered enough support to enter government. Plovdiv has hosted specialized exhibitions of the World's Fair in 1981, 1985, and 1991. The population by permanent address for the municipality of Plovdiv for 2007 is 380,682, which makes it the second in population in the nation. According to the data of the National Institute of Statistics (NSI), the people who actually live in Plovdiv are 346,790. According to the 2012 census, 339,077 live within the city limits and 403,153 in the
Plovdiv Airport and Frankfurt) in 2015 after two years of stable operation. The government have started the first concession procedure back in 2011, but there were no candidates for it. The second attempt for the concession was made in the spring of 2016 when the government have opened a tender for a 35 years concession of the airport, but the tender was shortly cancelled for non-compliance with European rules. In December 2016 the government opened the 3-rd tender for the concession. In the new procedure 3 companies have made the bid for the airport - Silk Road Plovdiv Airport, Consortium Plovdiv Airport