The following six Member States - Austria, Belgium, France, Germany, Ireland and Luxembourg - exceeded their NOx emission ceilings in all years from 2010-2013. In 2013, Germany and France reported the highest exceedances of NOx limits with 218 kilotonnes and 180 kilotonnes, respectively. In percentage terms, Luxembourg (41%) and Austria (32%) exceeded their NOx emission ceilings by the greatest amount in 2013.