To begin how high were taxes on personal income at the beginning of the 21st century? As an example, write down the marginal tax schedule for a single individual in the tax year for 2000. What was the standard deduction and what was the personal exemption? Suppose an individual earned $150,000. What would the individual's taxable income be? In addition, what was their total tax liability? Based upon the individual's tax liability, what would have been their average tax rate and their marginal tax rate? Be sure to provide details behind the calculation.