Like other eastern German cities, Weimar has a relatively small foreign population (compared to the German average): circa 4.0% are non-Germans by citizenship, while 7.9% have a migrant background (according to 2011 EU census). Differing from the national average, the biggest groups of migrants in Weimar are Vietnamese people, Russians and Ukrainians. During recent years, the economic situation of the city improved: the unemployment rate declined from 20% in 2005 to 5.1% in 2019. Due to the official atheism in the former GDR, most of the population is non-religious. 21.1% are members of the Evangelical Church in Central Germany and 6.8% are Catholics (according to 2011 EU census).