How often are Louisville Metro Police crashing their cruisers?

It's a video that everyone was talking about … a LMPD cruiser spins out of control and slams into a house. Tonight on WAVE 3 News at 6:00 Troubleshooter Eric Flack exposes dashcam video that captures crash after crash and what happens just seconds before.

Without a doubt police officers have one of the most dangerous jobs and accidents are bound to occur, but how often are crashes like these happening, and at what cost?