1. The current prison population is 4,053 (25th Feb 2014)
2. The rate of imprisonment in Ireland is just under 94 per 100,000 of population (Feb 2014)
3. The prison population has increased by 400% since 1970.
4. The average cost of imprisonment per prisoner was €65,404 in 2012, not including education spend; it was €65,359in 2011; €70,513 in 2010; €77,222 in 2009.