From the article linked above...

"A well-trained police officer will expend a minimum of 2,000 to 5,000 rounds per year, yet may never fire their weapon in defense. There is a significant disparity between rounds fired for training and those fired in a real world scenario."

I know dozens of cops, and they don't fire that many rounds in a lifetime, let alone a single year.

"Life is too short to hunt with an ugly gun".