What is the average travel and vacation expense for an American family per year?

How much does an average American family spend on travel and vacation in the span of one year?

Including things like, visiting family, vacations, travel expenses, air fare, food, touring, and lodging?
Listing the average expense for your family would be appreciated too.

I'd like to mount a campaign to encourage people not to go anywhere. Travel has become so expensive and unpleasant that it's hard to understand why people don't stay home.
Why are we crowding our highways and airports to get someplace else? Newspapers and magazines are filled with ads trying to get us to travel. They want us to go somewhere - anywhere but home.