Over the last several centuries, religious practice has been on the decline in a process of
secularization. Several European countries have experienced a decline in church attendance as well as a decline in the number of people professing a religious belief. The 2010
Eurobarometer survey found that, on average, 51% of the citizens of the European Union that they believe there is a God, 26% believe there is some sort of spirit or life force and 20% don't believe there is any sort of spirit, God or life force. 3% declined to answer. The Eurobarometer survey must be taken with caution, however, as there are discrepancies between it and national census results. For example, in the United Kingdom, the 2001 census revealed that over 70% of the population regarded themselves as "Christians" with only 15% professing to have no religion, though the wording of the question has been criticized as "misleading" by the
British Humanist Association. The 2011 census showed a dramatic reduction to less than 60% of the population regarding themselves as "Christians". Despite its decline,
Christianity is still the largest religion in Europe. According to a survey published in 2010, 76.2% of Europeans identified themselves as Christians.
Catholics were the largest Christian group in Europe, accounting for more than 48% of European Christians. The second-largest Christian group in Europe was the
Orthodox, who made up 32% of European Christians. According to Scholars, in 2017, Europe's population was 77.8% Christian (up from 74.9% 1970), these changes were largely result of the
collapse of Communism and
switching to Christianity in the former Soviet Union and
Eastern Bloc countries. 47% of French people declared themselves as agnostics in 2003. This situation is often called "
Post-Christian Europe". A decrease in religiousness and church attendance in western Europe (especially in
Belgium, the
Czech Republic,
Finland,
France,
Germany, the
United Kingdom,
Norway, the
Netherlands and
Sweden) has been noted. According to a survey published in 2012,
atheists and
agnostics make up about 18.2% of the European population. According to another survey about Religiosity in the
European Union from 2012 by Eurobarometer,
Christianity was the largest religion in the Union (accounting for 72% of the total population),
Catholics were with 48% the largest
Christian group in the Union,
Protestants made up 12%,
Eastern Orthodox made up 8% and other Christians accounted for 4% of the total population.
Non-believers/agnostics accounted for 16%,
atheists accounted for 7% and
Muslims accounted for 2%. == Ethnic groups ==