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The statistic shows the U.S. federal revenue from 2000 to 2011 with an additional forecast from 2012 to 2022 as a percentage of the Gross Domestic Product. Federal revenue amounted to 2.3 trillion U.S. dollars in 2011, which is about 15.4 percent of the U.S. GDP. The forecast predicts an increase in state revenue up to 5.181 trillion U.S. dollars in 2022, which would be about 21 percent of the respective U.S. GDP.