New Eurostat statistics on the acquisition of citizenship
An indicator commonly used to measure the effect of national policies on citizenship is the "naturalisation rate". In 2013, in the EU-28 as a whole, 2.9 per hundred non-national citizens were granted citizenship. The country with the highest naturalisation rate was Sweden (7.6 per hundred), followed by Hungary (6.5) and Portugal (5.9). The lowest naturalisation rates were found in Slovakia (0.3). Other countries with naturalisation rates under 1.0 were Denmark (0.5), the Czech Republic (0.5), Estonia (0.7), Austria (0.7), Lithuania (0.8), Cyprus (0.9) and Latvia (1.0).
About 89 % of these citizenship acquisitions concerned non-EU citizens; EU citizens only made up the majority of new citizens in Hungary (Romanians) and Luxembourg (Portuguese, Italians, neighbouring countries). The share of naturalised immigrants is one of the EU’s ‘Zaragoza’ indicators of immigrant integration.
For more information see: http://ec.europa.eu/eurostat/statistics-explained/index.php/Acquisition_of_citizenship_statistics