Figure 3: Prevalence of sexual assault in the last year for adults aged 16 to 59, by type of sexual assault
Year ending March 2005 to year ending March 2017, Crime Survey for England and Wales
Source: Crime Survey for England and Wales, Office for National Statistics
The sample size is lower for the years ending March 2011 to March 2013 than for other years due to use of a split-sample experiment in these years. The methodological note titled Split sample for intimate personal violence 2013-14 provides further information.
New questions were introduced into the survey from the year ending March 2013, and estimates from this year onwards are calculated using these new questions. Estimates for earlier years are calculated from the original questions with an adjustment applied to make them comparable to the new questions.