At some banks last year, revenue fell to levels not seen in more than five years, but pay did not. At Citigroup, revenue was the lowest since 2002. But the amount the bank spent on compensation was higher than in any other year between 2003 and 2006. At Bank of America, revenue last year was at the same level as in 2006, and the bank kept the amount it paid to employees in line with 2006. Profit at the bank last year, however, was one-fifth of the level in 2006.