By totally avoiding the issue of inequality in the distribution of wealth and income, these models often lead to extreme and unrealistic conclusions and are therefore a source of confusion rather than clarity. In the case of public debt, representative agent models can lead to the conclusion that government debt is completely neutral, in regard not only to the total amount of national capital but also to the distribution of the fiscal burden. This radical reinterpretation of Ricardian equivalence … fails to take account of the fact that the bulk of public debt is in practice owned by a minority of the population … so that the debt is the vehicle of important internal redistributions when it is repaid as well as when it is not.

Current figures:

Reserve Bank: 2014:Q1: 2,319.6 Billions of Dollars
Public: 2014:Q1: 12,619,199 Millions of Dollars