How many bombs has the U.S. dropped?

I know this is a very broad question and ill defined in the meaning of “bomb”, but I will keep it undefined since I would be intereted in any answers.

For example,

How many bombs has the U.S. dropped

In Iraq per day, overall

WWI, WWII, etc.

Isn’t this a question for antiwar.com or some DoD website?

And what difference does it make?

WWII 2 million tonns
Korea 0.7 million tonns
Indochina 8 million tonns
Gulf War 0.09 million tonns