America's official poverty measure is far simpler. Developed in the 1960s, the poverty threshold represents the basic cost of food for a household, multiplied by three. A family is judged to be poor if its pre-tax income falls below this threshold. But the official measure provides only a blurry picture. Food spending has become a flimsy reference point—in 2009 groceries accounted for just 7.8% of Americans' spending. The poverty indicator does not account for programmes that help the poor, such as the earned-income tax credit, nor does it adjust for regional variations in the cost of living. In 1995 the National Academy of Sciences recommended changing the measure, but only now is a new one close to being established.