| http://www.w3.org/ns/prov#value | - And since the mid-1980s, most capital income and capital gains of middle-income savers began to vanish from tax returns by migrating into IRAs, 401(k)s and other retirement and college savings plans.Balances in private retirement plans rose to $12.4 trillion in 2012 from $875 billion in 1984.
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