Before 1986, people often did not obtain a Social Security number until the age of about 14,[7] since the numbers were used for income tracking purposes, and those under that age seldom had substantial income.[8] The Tax Reform Act of 1986 required parents to list Social Security numbers for each dependent over the age of 5 for whom the parent wanted to claim a tax deduction.[9] Before this act, parents claiming tax deductions were simply trusted not to lie about the number of children they supported. During the first year of the Tax Reform Act, this anti-fraud change resulted in seven million fewer minor dependents being claimed.