... The IRS data below include all of the 135.7 million tax returns filed in 2006 that had a positive AGI, not just the returns from people who earned enough to owe taxes. From other IRS data, we can see that in 2006, 92.7 million of the tax returns came from people who paid taxes into the Treasury. That leaves 43 million tax returns filed by people with positive AGI who used exemptions, deductions and tax credits to completely wipe out their federal income tax liability. Not only did they get back every dollar that the federal government withheld from...