It is estimated that at least 120 million copies of McGuffey's Readers were sold between 1836 and 1960, placing its sales in a category with the Bible and Webster's Dictionary. Since 1961, they have continued to sell at a rate of some 30,000 copies a year.
Our researchers found the median debt per American household to be $2,300, while the average debt stands at $5,700. Combined data from the U.S. Census Bureau and the Federal Reserve allowed us to dive deeper into credit card debt in the United States, and look beyond the face value of those two figures.
Currently, the average credit card debt per U.S. household is $15,270, and in total, Americans owe $856.9 billion in credit card debt, based on American Household Credit Card Debt Statistics as of January 2014.