29/08/2003 (Agence Europe) - According to the National Institute for Economic Research, should Sweden decide to join the euro-zone, its GDP could increase by 2.5% in 2004 and by 2.7% in 2005 (after 1.3% in 2003), thanks in particular to the lower level of interest rates in the twelve Member States who have adopted the single currency. However, if the Swedish decide in the referendum of 14 September not to join, growth in 2004 and 2005 would be 2.3%. Other anticipated advantages of Sweden's...