These figures are for 2011 - 12, a period when the vast majority of benefit cuts had not yet been implemented. (liberalconspiracy.org)
A new analysis of the GOP tax bill, released just 24 hours before a final vote is expected to take place on the bill in the House, showed that majority of the benefit from the plan would go to the wealthiest Americans. (businessinsider.com)
(BTW, the VAST majority of those benefits accrue in the first 4 - 6 months... after that the marginal benefit of each additional month gets smaller and smaller.) (askmoxie.org)