Original sentence: According to a Georgetown University study, the country also has one of the highest rates of regular (monthly or more often) and weekly Mass attendance in the Western World.In 2006, approximately 86.8% of the population identified themselves as Roman Catholic, 1.4% less than 4 years earlier.Muslims and atheists are fast growing groups in the republic of Ireland, up by 70% and 35% respectively
Edited sentence: According to a Georgetown University study, the country also has one of the highest rates of regular and weekly Mass attendance in the Western World.Approximately 86.8% of the population identify themselves as Roman Catholic