sentences:  Between 1983 and 2007, the top 5 percent saw their debt fall from 80 cents for every dollar of income to 65 cents, while the bottom 95 percent saw their debt rise from 60 cents for every dollar of income to $1.40.Krugman found a strong correlation between inequality and household debt during the twentieth and early twenty-first centuries.Twenty-first century college costs have risen much faster than income, resulting in an increase in student loan debt from $260 billion in 2004 to $1.6 trillion in 2019Q2.