text: For the EU-15 (Member States that joined the EU before 2004), the ‘Yes’ responses to this question 
  decreased from 31% in 1991 (first EWCS) to 28% in 2005 and reached 26% in 2015. For the 10 new 
  Member States the rate decreased, from previously 40% in 2005 to 29% in 2015.254 The EU membership 
  has definitely created**more convergence**between the countries. 