The level of under-reporting varies according to crime type. For example, as I have mentioned, it is generally accepted that crimes such as burglary and theft of a motor vehicle tend to have very high reporting rates because it is normally a condition of an insurance claim that the matter is reported to the Garda Síochána. The scale of unreported crime is a difficult statistic to measure precisely by virtue of the fact that, by definition, it does not appear in official statistics. However, in countries where crime victimisation surveys are a regular feature of the criminal research landscape, tentative comparisons can be made between the results of such surveys and selected police statistics. I have obtained Government approval to conduct national crime victimisation surveys every two years as a complementary source of information to Garda crime statistics.