In Ireland, only 47 percent of those polled said they considered themselves religious -- a 22-point drop from the 69 percent recorded in a similar poll conducted in 2005. In addition, 10 percent self-identified as atheist.
However, according to trending data,religiosity has fallen by 9 points globally since 2005 and the number of people who identify as atheist rose from 4 percent to 7 percent. Note that only 40 countries were polled in both 2005 and 2012, so there are two different sets of data available.
"Obviously, there were all the scandals in the Church over that period -- that was massive," she said. "Also, as countries get richer, they tend to lose some sense of religion. We did become richer -- at least at the beginning of that period."
Clarification: Since only 40 countries were polled in both 2005 and 2012, the WIN-Gallup poll on faith has two sets of data (current and trending) -- both of which were referred to here. For the sake of clarity, this article has been amended to reflect this.