Peterborough had the sixth lowest crime severity rate in 2013 out of Canada's 34 census metropolitan areas, according to Statistics Canada. Peterborough's crime severity index of 54.4 is a 14% reduction compared to the 2012 rate. Only Toronto, Ottawa, Quebec City, Barrie and Guelph had lower crime severity indexes, according to the survey. None of the census metropolitan areas had increases in crime severity in 2013. The crime severity index is calculated by Statistics Canada and takes into account both the volume and severity, based on average sentences for offenders, of police-reported crime in Canada. Nationally the CSI was down 9% in 2013 compared to 2012 and is 36% lower than 10 years ago.