paragraph_text: Several countries have established their national churches, linking the ecclesiastical structure with the state. Jurisdictions where a Protestant denomination has been established as a state religion include several Nordic countries; Denmark (including Greenland), the Faroe Islands (its church being independent since 2007), Iceland and Norway have established Evangelical Lutheran churches. Tuvalu has the only established church in Reformed tradition in the world, while Tonga—in the Methodist tradition. The Church of England is the officially established religious institution in England, and also the Mother Church of the worldwide Anglican Communion.

paragraph_text: SAS Group destinations This is a complete list of the SAS Group airlines destinations, including Air Greenland, Scandinavian Airlines and Widerøe. In September 2010 the SAS Group airlines served 180 destinations in 35 countries on 4 continents.

paragraph_text: Greenland (Greenlandic: Kalaallit Nunaat, pronounced (kalaːɬit nunaːt); Danish: Grønland, pronounced (ˈɡʁɶnˌlanˀ)) is an autonomous constituent country within the Kingdom of Denmark between the Arctic and Atlantic Oceans, east of the Canadian Arctic Archipelago. Though physiographically a part of the continent of North America, Greenland has been politically and culturally associated with Europe (specifically Norway and Denmark, the colonial powers, as well as the nearby island of Iceland) for more than a millennium. The majority of its residents are Inuit, whose ancestors began migrating from the Canadian mainland in the 13th century, gradually settling across the island.

paragraph_text: Togo is a multilingual country. According to Ethnologue, 39 distinct languages are spoken in the country, many of them by communities that number fewer than 100,000 members. Of the 39 languages, the sole official language is French. Two spoken indigenous languages were designated politically as national languages in 1975: Ewé (Ewe: Èʋegbe; French: Evé) and Kabiyé; they are also the two most widely spoken indigenous languages.

paragraph_text: SAS AB (Scandinavian Airlines System Aktiebolag) (, , ), trading as SAS Group, is an airline holding company headquartered in the SAS Frösundavik Office Building in Solna Municipality, Sweden. It is the owner of the airlines Scandinavian Airlines and Scandinavian Airlines Ireland. SAS once owned 19.9% of the now defunct Spanish airline Spanair as well as shares in Estonian Air and Skyways Express. It also owns the aviation services companies SAS Business Opportunities, SAS Cargo Group, SAS Ground Services and SAS Technical Services. In addition, it holds minority ownership of Air Greenland. SAS Group is partially owned by the governments of Sweden and Denmark with a 21.4% and 14.3% ownership, respectively. The remaining 64.3% is held by private owners, of which Foundation Asset Management owns 7.6%. The company is listed on the Oslo Stock Exchange, the Stockholm Stock Exchange, and the Copenhagen Stock Exchange.

paragraph_text: The constitution of the Fifth Republic states that French alone is the official language of the Republic. However, Alsatian, along with other regional languages, are recognized by the French government in the official list of languages of France. A 1999 INSEE survey counted 548,000 adult speakers of Alsatian in France, making it the second most-spoken regional language in the country (after Occitan). Like all regional languages in France, however, the transmission of Alsatian is on the decline. While 39% of the adult population of Alsace speaks Alsatian, only one in four children speaks it, and only one in ten children uses it regularly.

paragraph_text: Air Greenland A/S, also known as Greenlandair, is the flag carrier airline of Greenland, jointly owned by the SAS Group (37.5%), the Greenlandic Government and the Danish Government. It operates a fleet of 32 aircraft, including 1 airliner used for transatlantic and charter flights, 9 fixed-wing aircraft primarily serving the domestic network, and 22 helicopters feeding passengers from the smaller communities into the domestic airport network. Flights to heliports in the remote settlements are operated on contract with the government of Greenland.

paragraph_text: The Hep Stars were a Swedish rock group, formed in 1963 in Stockholm. During 1965-66 the band was the most successful of contemporary 1960s Swedish pop groups performing in the English language. Outside The Nordic Countries the band is best known as a launching point for the keyboard player and composer Benny Andersson, who went on to enjoy worldwide success with ABBA.

paragraph_text: Turkey's application to accede to the European Economic Community, the predecessor of the European Union (EU), was made on 14 April 1987. After the ten founding members, Turkey was one of the first countries to become a member of the Council of Europe in 1949. The country has also been an associate member of the Western European Union from 1992 to its end in 2011. Turkey signed a Customs Union agreement with the EU in 1995 and was officially recognised as a candidate for full membership on 12 December 1999, at the Helsinki summit of the European Council.

paragraph_text: Kochite is found in the alkaline igneous complex of East Greenland and is named after Danish geologist Lauge Koch (1892-1964), a geologist who overturned the previous conception of Greenland's landscapes. Kochite is the titanium – manganese analog of rosenbuschite. It occurs in nepheline syenite associated with nepheline, alkali feldspar, and låvenite in the Werner Bjerge alkaline complex along the eastern coast of Greenland.

paragraph_text: Chengdu Greenland Tower is a supertall skyscraper under construction in Chengdu, Sichuan, China. It will have a height of with 101 floors. Construction began in 2014 and is expected to end in 2018. It will become the tallest building in Chengdu and southwestern China.

paragraph_text: Turkey's application to accede to the European Economic Community, the predecessor of the European Union (EU), was made on 14 April 1987. After the ten founding members, Turkey was one of the first countries to become a member of the Council of Europe in 1949. The country was also an associate member of the Western European Union from 1992 to its end in 2011. Turkey signed a Customs Union agreement with the EU in 1995 and was officially recognised as a candidate for full membership on 12 December 1999, at the Helsinki summit of the European Council.

paragraph_text: Damernas Värld (meaning "Women's World" in English) is a Swedish language monthly fashion and women's magazine published in Stockholm, Sweden. It is one of the oldest magazines in the country.

paragraph_text: Water covers 71% of the Earth's surface. It is vital for all known forms of life. On Earth, 96.5% of the planet's crust water is found in seas and oceans, 1.7% in groundwater, 1.7% in glaciers and the ice caps of Antarctica and Greenland, a small fraction in other large water bodies, 0.001% in the air as vapor, clouds (formed of ice and liquid water suspended in air), and precipitation. Only 2.5% of this water is freshwater, and 98.8% of that water is in ice (excepting ice in clouds) and groundwater. Less than 0.3% of all freshwater is in rivers, lakes, and the atmosphere, and an even smaller amount of the Earth's freshwater (0.003%) is contained within biological bodies and manufactured products. A greater quantity of water is found in the earth's interior.

paragraph_text: Up to 1990, English, German and Afrikaans were official languages. Long before Namibia's independence from South Africa, SWAPO was of the opinion that the country should become officially monolingual, choosing this approach in contrast to that of its neighbour South Africa (which granted all 11 of its major languages official status), which was seen by them as "a deliberate policy of ethnolinguistic fragmentation." Consequently, SWAPO instituted English as the sole official language of Namibia though only about 3% of the population speaks it as a home language. Its implementation is focused on the civil service, education and the broadcasting system. Some other languages have received semi-official recognition by being allowed as medium of instruction in primary schools. It is expected of private schools to follow the same policy as state schools, and "English language" is a compulsory subject. As in other postcolonial African societies, the push for monolingual instruction and policy has resulted in a high rate of school drop-outs and of individuals whose academic competence in any language is low.

paragraph_text: As It Is in Heaven () is a Swedish film which was released to cinemas in Sweden on 3 September 2004, directed by Kay Pollak and starring Michael Nyqvist and Frida Hallgren. It was a box office hit in Sweden and several other countries. It was nominated for Best Foreign Language Film at the Hollywood 77th Academy Awards.

paragraph_text: Both the English-language and the Swedish language-versions of the songs can be heard in the 1988 film "PS Last Summer".

paragraph_text: Indian English is any of the forms of English characteristic of India. English is the only official language in some states of India and is a lingua franca in the country.

paragraph_text: Swedish evolved from Old Norse around the 14th and 15th century, and historically, the Swedish dialects were generally much more different than today. Since the 20th century Standard Swedish prevails throughout the country. The Scandinavian languages constitute a dialectal continuum and some of the traditional Swedish dialects could equally be described as Danish (Scanian) or Norwegian (Jamtlandic).

paragraph_text: In Georgia Russian has no official status, but it's recognised as a minority language under the Framework Convention for the Protection of National Minorities. According to estimates from Demoskop Weekly, in 2004 there were 130,000 native speakers of Russian in the country, and 1.7 million active speakers. 27% of the population was fluent in Russian in 2006, and 1% used it as the main language with family, friends or at work. Russian is the language of 9% of the population according to the World Factook. Ethnologue cites Russian as the country's de facto working language.

Question: When did Swedish become the official language of the country the founders of Air Greenland are from?
Answer: 20th century