The data on first names of newborns is based on reports of Austria’s registry offices on live births, which have been transmitted from the Central Civil Status Register as part of the notifications of birth since 1 November 2014. From 1984 to 2009, the first names of babies with Austrian citizenship were collected. From 2010 onwards, the first names of all babies are included, irrespective of their nationality. From 2015 onwards, babies born abroad to mothers with their main residence in Austria are also recorded. When compiling the list of most popular first names, the names are used in their original spelling without special characters. In order to be able to merge homonymous first names with different special characters, they are normalised (transcoded).