27. Between 1968 and 2011, the percentage share of total income grew for (LO1, 3) a) lowest two quintiles b) the middle three quintiles c) the highest quintile d) the highest quintile and the lowest quintile 28. Between 1968 and 2011, our income distribution (LO1) a) became more equal b) stayed about the same c) became less equal 29. Real median family income in the United States has (LO1, 2) a) grown each year since 2000 b) declined each year since 2000 c) risen by about 20 percent since the late 1960s d) become lower today than it was in 1975