Complex sentence: The report illustrated how over 200 UDR weapons were lost or stolen by the end of 1972, although the rate of loss had decreased to 56 by 1973 when the report was written.
Split into simpler sentences: The report illustrated how over 200 UDR weapons were lost or stolen by the end of 1972. The rate of loss had decreased to 56 by 1973 when the report was written.