Monetary Union, Union Citizenship, Justice and Home Affairs, and Common Defence. The second referendum approved the treaty amended with the opt-outs. EU enlargement of 1995 In 1994, four countries, and one dependency, held referendums on membership of the EU, resulting in the 1995 enlargement of the European Union. — 1994 Austrian European Union membership referendum, 12 June 1994, 66.6% in favour, turnout 82.3% — 1994 Finnish European Union membership referendum, 16 October 1994, 56.9% in favour, turnout 70.8% — 1994 Swedish European Union membership referendum, 13 November 1994, 52.3% in favour, turnout 83.3% — 1994 Ålandic European Union membership referendum, 20 November 1994, 73.6% in favour, turnout 49.1% The Åland Islands, a semi-autonomous dependency of Finland, also voted on their accession to the European Union. The favourable vote meant that EU law would apply also to the Åland Islands. — 1994 Norwegian European Union membership referendum, 28 November 1994, 52.2% against, turnout 89.0% For the second time, Norwegian voters rejected the Norwegian government's proposal to join the EU. Austria, Sweden, and Finland were admitted as members of the EU, acceding on 1 January 1995. Treaty of Amsterdam, 1998 Two countries held referendums on the ratification of the treaty of Amsterdam. — a referendum to approve the Eighteenth Amendment of the Constitution of Ireland, 22 May 1998, 61.7% in favour, turnout 56.2% — 1998 Danish Amsterdam Treaty referendum, 28 May 1998, 55.1% in favour, turnout 76.2% Treaty of Nice, 2001 — a referendum to approve the Twenty-fourth Amendment of the Constitution Bill, 2001 (Ireland), 7 June 2001, 53.9% against, turnout 34.8% In 2001, Irish voters rejected the Treaty of Nice, in the so-called "Nice I referendum". — a referendum to approve the Twenty-sixth Amendment of the Constitution of Ireland, 19 October 2002, 62.9% in favour, turnout 49.5% In the so-called "Nice II referendum" in 2002, statements on Ireland not having to join a common defence policy and affirming the right to decide on enhanced cooperation in the national parliament were stressed in a special document, resulting in a favourable vote. EU enlargement of 2004 The 2004 enlargement of the European Union involved ten candidate states, eight from Central and Eastern Europe, and the Mediterranean islands of Malta and Cyprus. In 2003, referendums on joining the EU were held in all these nations except Cyprus. — 2003 Maltese European Union membership referendum, 8 March 2003, 53.6% in favour, turnout 90.9% — 2003