Legend
1979 - EU9 - 9 Member States: Germany, France, Italy, the Netherlands, Belgium, Luxembourg, the UK, Denmark and Ireland.
1984 - EU10 - The 9 Member States + Greece in 1981.
1989 - EU12 - The 10 Member States + Spain and Portugal in 1986.
1994 - EU12 - 12 Member States.
1999 - EU15 - The 12 Member States + Austria, Sweden and Finland in 1995.
2004 - EU25 - The 15 Member States + Poland, Hungary, Slovenia, Slovakia, the Czech Republic, Estonia, Latvia, Lithuania, Cyprus and Malta in 2004.
2009 - EU27 - The 25 Member States + Bulgaria and Romania in 2007.