of the , for a university preparatory school () that has a focus on the natural sciences, 30% of the school's freshmen come from Vietnamese families. Austria On 28 December 1961, under the Raab-Olah agreement, Austria began a recruitment agreement with Spain, but compared to West Germany and Switzerland, the wage level in Austria was not attractive to many potential Spanish job-seekers. However, the agreements signed with Turkey (1963) and Yugoslavia (1966) were more successful, resulting in approximately 265,000 people migrating to Austria from these two countries between 1969 and 1973, until being halted by the early 1970s economic crisis. In 1973, 78.5% of guest workers in Austria came from Yugoslavia and 11.8% from Turkey. Currently Today the term is no longer accurate, as the former guest worker communities, insofar as they have not returned to their countries of origins, have become permanent residents or citizens, and therefore are in no meaningful sense "guests". However, although many of the former "guest workers" have now become German citizens, the term or "foreigner" is still colloquially applied to them as well as to their naturalised children and grandchildren. A new word has been used by politicians for several years: ('people with an immigration background'). The term was thought to be politically correct because it includes both immigrants and those who, being naturalized, cannot be referred to as immigrants—who are colloquially (and not by necessity xenophobically) called "naturalized immigrants" or "immigrants with a German passport". It also applies to German-born descendants of people who immigrated after 1949. To emphasize their Germanness, they are also quite often called fellowcitizens, which may result in calling "our Turkish fellow citizens" also those who are foreigners still, or even such Turks in Turkey who never had any contact to Germany. , as a historical term however, referring to the guest worker programme and situation of the 1960s, is neutral and remains the most correct designation. In literary theory, some German migrant writers (e.g. Rafik Schami) use the terminology of "guest" and "host" provocatively. The term lives on in Serbo-Croatian (Serbian, Bosnian, Croatian and Montenegrin), Bulgarian, Macedonian, and Slovene languages, generally meaning 'expatriate' (mostly referring to a second generation from the former Yugoslavia or Bulgaria born or living abroad). The South Slavic spelling reflects the local pronunciation of (in Cyrillic: or ). In Belgrade's jargon, it is commonly shortened to () derived by the Serbian immigrant YouTube star