Proposed Provision: B6.4. Starting in 2018, provide a 5 percent uniform benefit increase 24 years after initial benefit eligibility. Phase in the benefit increase at 1 percent per year from the 20th through 24th years after eligibility. For disabled workers, the eligibility age is the initial entitlement year to the benefit. The benefit increase is equal to 5 percent of the PIA of a worker assumed to have career-average earnings equal to SSA's average wage index.