Changes in the level of reporting participation within Oakland County may have created artificially high increases between 1994 and 1998. Rates are calculated by dividing the number of crimes by the population, then multiplying by 100,000. Percentages show the five year trend in crime rate.
Crime rates control for differences in population, therefore the counties are comparable.
Percentage changes are determined by subtracting the crime rate in 1994 from the crime rate in 1998, then dividing the total by the crime rate in 1994.