Question: During which period Rositsa Yanakieva served as the Mayor of a city in Europe's 16th-largest country?

Context articles: South Africa
Pride Park Stadium
Rositsa Yanakieva
Farah, Afghanistan
Thailand
List of companies of Indonesia
Indonesia
Bulgaria
List of companies of Bulgaria
Minneapolis

South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa.
 It is bounded on the south by 2,798 km of coastline of Southern Africa stretching along the South Atlantic and Indian Oceans; on the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and on the east and northeast by Mozambique and Swaziland; and surrounds the kingdom of Lesotho.
 South Africa is the 25th-largest country in the world by land area, with close to 56 million people, is the world's 24th-most populous nation and the largest in Southern Africa.
 It is the southernmost country on the mainland of the Old World or the Eastern Hemisphere.
 About 80 percent of South Africans are of Sub-Saharan African ancestry, divided among a variety of ethnic groups speaking different Bantu languages, nine of which have official status.
 The remaining population consists of Africa's largest communities of European (white), Asian (Indian), and multiracial (coloured) ancestry.
Pride Park Stadium is an all-seater football stadium in Derby, England, that is the home ground of English Football League club Derby County.
 With a capacity of 33,597, it is the 16th-largest football ground in England and the 20th-largest stadium in the United Kingdom.
 Located on Pride Park, a business park on the outskirts of Derby city centre, the stadium was built as part of the commercial redevelopment of the area in the 1990s.
 Derby County have played at the ground since it opened in 1997 as a replacement for their former home, the Baseball Ground.
 Due to sponsorship, the venue was officially known as the iPro Stadium between 2013 and 2016.
Rositsa Yanakieva (Bulgarian: Росица Янакиева ) (July 7, 1954 – January 26, 2015) was a Bulgarian politician and chemist, who served as the Deputy Speaker of the National Assembly from 2014 until January 2015.
 She served as the Mayor of Pernik, Bulgaria, for two, consecutive terms from 2005 to 2014.
Farah (Pashto / Dari Persian: فراه) is the capital of Farah Province, located in western Afghanistan.
 It is about the 16th-largest city of the country in terms of population.
 The Farah Airport is located in the area.
Thailand ( ), officially the Kingdom of Thailand and formerly known as Siam, is a country at the centre of the Indochinese peninsula in Southeast Asia.
 With a total area of approximately 513000 km2 , Thailand is the world's 50th-largest country.
 It is the 20th-most-populous country in the world, with around /1e6 round 0 million people.
Indonesia is a unitary sovereign state and transcontinental country located mainly in Southeast Asia with some territories in Oceania.
 Situated between the Indian and Pacific oceans, it is the world's largest island country, with more than seventeen thousand islands.
 At 1,904,569 km2 , Indonesia is the world's 14th-largest country in terms of land area and world's 7th-largest country in terms of combined sea and land area.
 It has an estimated population of over 260 million people and is the world's fourth most populous country, the most populous Austronesian nation, as well as the most populous Muslim-majority country.
Indonesia ( or ; Indonesian: ), officially the Republic of Indonesia (Indonesian: "Republik Indonesia" ), is a unitary sovereign state and transcontinental country located mainly in Southeast Asia, with some territories in Oceania.
 Situated between the Indian and Pacific oceans, it is the world's largest island country, with more than seventeen thousand islands.
 At 1,904,569 km2 , Indonesia is the world's 14th-largest country in terms of land area and world's 7th-largest country in terms of combined sea and land area.
 It has an estimated population of over floor( /1e6) million people and is the world's fourth most populous country, the most populous Austronesian nation, as well as the most populous Muslim-majority country.
 The world's most populous island, Java, contains more than half of the country's population.
Bulgaria ( ; Bulgarian: България , "Bǎlgariya "), officially the Republic of Bulgaria (Bulgarian: Република България , "Republika Bǎlgariya ", ] ), is a country in southeastern Europe.
 It is bordered by Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east.
 With a territory of 110994 km2 , Bulgaria is Europe's 16th-largest country.
Bulgaria is a country in southeastern Europe.
 It is bordered by Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east.
 With a territory of 110994 km2 , Bulgaria is Europe's 16th-largest country.
 Bulgaria's population of 7.4 million people is predominantly urbanised and mainly concentrated in the administrative centres of its 28 provinces.
 Most commercial and cultural activities are centred on the capital and largest city, Sofia.
 The strongest sectors of the economy are heavy industry, power engineering, and agriculture, all of which rely on local natural resources.
Minneapolis ( ) is the county seat of Hennepin County, and the larger of the Twin Cities, the 16th-largest metropolitan area in the United States.
 As of 2016, Minneapolis is the largest city in the state of Minnesota and 46th-largest in the United States, with an estimated population of 413,651.
 The Twin Cities metropolitan area is the third largest in the Midwest with about 3.5 million people.
 Minneapolis and Saint Paul anchor the second-largest economic center in the Midwest, after Chicago.