DATA: Sexual Assaults At The University of Michigan Don’t Support Claims of an “Epidemic.” “Note also that the downward trend in sexual assaults at UM is consistent with the downward trend in the national incidence of rape, which has fallen by 45% over the last 20 years, from 42.8 per 100,000 people to 23.6 per 100,000 last year (see chart below). If there’s a ‘rape epidemic’ in America, it certainly isn’t supported by the FBI national crime data.” Facts, data, and logic are tools of the Patriarchy.