Ratio between the number of banknotes destroyed over a given period of time and the number of banknotes processed (cleared) during that same period. Expressed as a percentage, it indicates the number of banknotes destroyed for each hundred banknotes processed. The destruction rate depends on many factors, including but not limited to the quality policy followed by the central bank. There tends to be notable differences in the destruction rates between denominations, the rates generally being much higher for low denominations than for higher denominations.