Klagenfurt Styria formed the British occupation zone in liberated Austria, a state of affairs which lasted until 26 October 1955. In 1961, Klagenfurt became the first city in Austria to adopt a pedestrian zone. The idea of a friendly twinning of cities in other countries that had started with the very first ever city partnership - Klagenfurt and Wiesbaden, Germany, as early as 1930 - was followed up by numerous city partnerships with the result that in 1968 Klagenfurt was honoured with the title of a "European City of the Year". Three times, a European record, Klagenfurt was also awarded the
Population and housing censuses by country by the Central Statistics Office. There have been twelve censuses in Botswana's history. The most recent was the 2011 Botswana Population and Housing Census, which occurred in August 2011. The Brazilian census is carried out by the Brazilian Institute of Geography and Statistics every 10 years. The last one was in 2010. Earlier censuses were taken in 1872 (the first), 1900, 1920, 1941, 1950, 1960, 1970, 1980, 1991, 2000 and 2010. Brazil's Demographic Census is one of the most hierarchical collection of census data in the world. Its hierarchies include: Brazil (Country), Major Regions, States, Macro-regions, micro-regions, municipalities, districts, sub-districts,