The figures covered trades during the month ending Sept. 8.

The figures below show how credit use has changed over the period covered by these three surveys.

These figures cover both the private and public sectors, including a surprising drop in book sales to schools.

The figures cover the late October period, in which stock prices plunged sharply.

Those figures only cover the period through Sept. 30, the end of the federal government's fiscal year.

The figures cover 1990 to 1997, the latest years for which complete data is available.

Those figures cover the same scope of programs as the Congressional accounting.

The figures cover operations in which an American company had at least a 10 percent stake.

The most recent published figures cover the year to December 26, 2009.

The figures cover the five weeks that ended in the first week of April.