CBO's mandate is to provide the Congress with

Objective, nonpartisan, and timely analyses to aid in economic and budgetary decisions on the wide array of programs covered by the federal budget and

The information and estimates required for the Congressional budget process.

Federal outlays through 2016, long term outlook on Social Security costs, the costs of disaster like Katrina and war engagements like Iraq, are just a few of the many data sets available, often in both pdf and excel format.