The figure is a line graph. The horizontal axis shows years from 1987 to 2009. The vertical axis shows total household debt secured and unsecured) as a percentage of household income. The lowest ratio is for 1987, approximately 80%. Between 1989 and 2001, the ratio is fairly steady at between 90 and 100%. It then climbs steeply to a peak of about 155% in 2007 before falling back to a little over 140% in 2009.

2.1 Debt: concepts and evidence