A military power during the 17th century, Sweden has not participated in any war for two centuries. An armed neutrality was preserved in both World Wars. Since then, Sweden has pursued a successful economic formula consisting of a capitalist system intermixed with substantial welfare elements. Sweden joined the EU in 1995, but the public rejected the introduction of the euro in a 2003 referendum. The share of Sweden’s population born abroad increased from 11.3% in 2000 to 19.1% in 2018.