“lost mail” +usps +statistics

Occasionally my statistics page for the No Vote By Mail Project’s Website gives me an interesting bit of info. But in this case the search thread ultimately won’t take you very far.

Dear Yahoo!:
What percentage of mail is lost by the USPS?
Mike
Chicago, Illinois
Dear Mike:
You’d have better luck finding Dick Cheney’s social security number. Even though the United States Postal Service routinely hires contractors to assess performance, it doesn’t release statistics on lost mail. More from Yahoo.