When analysing rape over time, types of rape that were not included as a type of rape before the legislation reform in 2000 should be included, e.g. sexual intercourse by threats, cunning behaviour etc. and sexual intercourse with an unconscious person. More details of these changes in the legislation and in the statistics are given in chapter 3.6 in the publication Kriminalitet og rettsvesen 2009 (in Norwegian only).