One can look at such tables with the intention to score points. One extreme example: The IRA alone is responsible for more than twice the number of Civilian deaths in Belfast North than the British army is. One point for Teribus.
But if one looks at the entries for all the Loyalists paramilitaries killing Civilians in North Belfast one gets an impression what JimmyC means when saying that the Nationalist community started looking to the IRA for protection. If night by night houses of Catholics are burned down with the security forces standing by watching one cannot but understand the despair leading to the (renewed) IRA.