When Ella, single & age 40, filed her 2016 federal income tax return in March 2017, she itemized her 2016 deductions. Her itemized deductions totaled $7,000 (vs. the standard deduction of S6,300). Of that, $5,000 was a deduction for state income taxes paid in 2016. In April 2017, Ella received a state income tax refund of $2,000. What amount, if any, of the $2,000 state income tax refund must Ella include in income in 2017?