3 Clearance rate
The clearance rate used to be around 70% overall for penal code offenses, but has been on a declining trend since 1989. It further declined as a sharp increase in the number of reported cases overwhelmed the capacity of clearance. The clearance rate reached a post WWII low in 2001 at 38.8% for all penal code offenses and 19.8% for non-traffic penal code offenses. The clearance rate then started to rise from 2002, and has continued to do. In 2008 it declined slightly from the previous year to 50.9% (down 0.7 points from the previous year) of all penal code offenses and 31.6% (down 0.2 points (id.)) of non-traffic penal code offenses (See Fig. 1-1-1-1).