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2005 Individual Income Tax Returns Publication 1304

2007 Publication 1304 Section 4--Explanation of Terms

2008 Publication 1304 Section 4: Definition of Terms

2006 Publication 1304 Section 1--Changes in Law

2011 Individual Estimated Data Line Count Publication

2007 Publication 1304 Section 1--Changes in Law

2008 Publication 1304 Section 2: Description of Sample

2007 Publication 1304 Section 2--Description of Sample

Look here for the 2004 - 2005 IRS Data Book (Publications 55B), with links to the 1995 to 2000 and 2001 to 2003 IRS Data Books. The tables shown in these publications contain statistics for IRS collections and refunds, as well as number of returns. There's also information on examination activities, taxpayer assistance, chief counsel, appeals, criminal investigation, and more.

Look here for the 2007 IRS Data Book (Publications 55B), with links to the 1995 to 2000 2001 to 2003 and 2004 to 2006 IRS Data Books. The tables shown in these publications contain statistics for IRS collections and refunds, as well as number of returns. There's also information on examination activities, taxpayer assistance, chief counsel, appeals, criminal investigation, and more.