I am wondering if people from other countries use as much foul language and profanity as we do in America.
I think Americans are very tame when it comes to swearing. British and Australian people swear ten times more. Actually, I'd go so far as to say most Americans are considered to be relatively prudish by other native English speakers.
I agree with Andi that the average American is probably more prudish than other native English speakers. The USA is the only country that's too embarrassed to say titbits, for a start!
From my experience with Italian and Slovak speakers... much more so than America. Much, much more. (Plus, I love Slovak swearing - literally ten times more flexible than English swearing.)
As an Australian, I really don't think Americans swear that much - I mean, swear casually.
We like to say that Hungarian is the only language where you can swear for two hours without repeating yourself. And we have lots of swear words in our language indeed. I often hear people whose every other word is bad language.