The total debt accrued by the U.S. annually can be accessed here.
Additional information on the federal debt of the United States
The level of national debt held by the United States government has risen sharply in the years following the Great Recession. Federal debt is the amount of debt the federal government owes to creditors who hold assets in the form of debt securities. As with individuals and consumers there is a common consensus among economists that holding debt is not necessarily problematic for government so long as the public debt is held at a sustainable level. Although there is no agreed upon ratio of debt to gross domestic product, the increasing debt held by the Federal Reserve has become a major part of the political discourse in the United States.
In recent years debate over the debt ceiling has been of concern to domestic politicians, the owners of federal debt and global economy as a whole. The debt ceiling is a legislated maximum amount that national debt can reach intended to impose a degree of fiscal prudence on incumbent governments. However, as national debt has grown the debt ceiling has been reached thus forcing legislative action by congress. In both 2011 and 2013 new legislation was passed by congress allowing the debt ceiling to be raised. The Budget Control Act of 2011 and the No Budget, No Pay Act of 2013 successively allowed the government to avoid defaulting on national debt and therefore avert a potential economic crisis.