Those hikes directly impact people who can least afford them, says Hulchanski. Renters, in general, earn about half of what home owners do, and the income disparity between the two groups is only getting wider. The share of renters in the top 20 percent of the income distribution has shrunk from 14 percent in the late 1960s to 6 percent now. According to Hulchanski's analysis, over half of renter households are on the bottom 50 percent of the income ladder. Paraphrase the authors idea in 1 sentence /