When did making over $11 an hour become "poverty" wages?

Poverty at highest rate in decades

Officially, poverty in the U.S. means earning under $21,954 for a family of four.
That does not count Food Stamps or certain government payments like the Earned Income Tax Credit.
http://www.necn.com/09/16/10/Poverty-at-highest-rate-in-decades/landing.html?blockID=312457&feedID=4209