Bankrupt

Super-rich Americans have lots of money but there are relatively few such people compared with the many more people who are "merely rich," or middle-class, or working class. If the government wishes to raise some fixed amount of money, say $2800 billion (which is approximately the amount of money that the United States Government spent in 2007), for the fiscal year 2009, how much of this money should be raised from each of the different "income classes" in our society?