According to the 2008 Global Integrity Report, Italy scores 86 out of 100:
"Category VI Anti-Corruption and Rule of Law 86 Strong
VI-1 Anti-Corruption Law 100 Very Strong
VI-2 Anti-Corruption Agency 85 Strong
VI-3 Rule of Law 88 Strong
VI-4 Law Enforcement 71 Moderate "
http://report.globalintegrity.org/Italy/2008/scorecard