However, the growth in the National Debt and household mortgage debt in the 4th quarter, as a percentage of GDP, is the untold story. Here are the numbers for the 4th quarter, 2004:
GDP: $2.999 Trillion ($11.994 Trillion annual rate)
Increase in National Debt: $217 Billion (US Treasury)
Increase in Mortgage Debt: $205 Billion (Federal Reserve: Flow of Funds)
The increase in National and household mortgage debt as % of GDP: 14.1%

This continues a trend over the last four years as depicted in this chart. It appears that we are buying GDP growth with debt. If I was analyzing a company's balance sheet, and I saw this trend, I would be very concerned.
And the 4th quarter was even worse. The increase in debt was 14.1% of GDP.
With all that additional debt, maybe we should be asking why GDP growth was so low!