Revellers attend St Patrick's Day festivities in Dublin on March 17, 2013. More than 100 parades are being held across Ireland to mark St Patrick's Day, the feast day of the patron saint of Ireland, with up to 650,000 spectators expected to attend the parade in Dublin. Ireland has high hopes that the festivities will bring a much-needed boost to the economy. AFP PHOTO/ PETER MUHLY        (Photo credit should read PETER MUHLY/AFP/Getty Images)