(1) For (a) 1999-2000, (b) 2000-2001 and (c) 2001-2002, how many, and what percentage of, taxpayers were audited by the Australian Taxation Office.

(2) What percentage of audits uncovered mistakes or fraud which resulted in an increase in the taxpayer's tax liability for each year.

(3) What was the average sum the tax liability increased per taxpayer discovered to have made a mistake or committed fraud for each year.

(4) What was the average fine or penalty imposed on taxpayers discovered to have made a mistake or committed fraud for each year.

(5) What was the gross sum of (a) increased tax and (b) fines or penalties imposed on these taxpayers for each year.

(6) What were the administrative and compliance costs for these audits for each year.

The Commissioner of Taxation advises me that this information is not readily available and I do not propose to authorise the diversion of significant resources to collate this information. However, some information is contained in the ATO's Annual Report and the Commissioner's Compliance Program.