Reported by YOU or reported by employers, etc.? You are supposed to be well aware of what you reported and have the documents that support your entries. You can look back at your own tax return and/or the worksheets that are part of the pdf.
You can get a wage and income transcript from the IRS to see what was reported to the IRS:
You can get a free transcript from the IRS:
https://www.irs.gov/individuals/get-transcript
Wage and Income Transcript - shows data from information returns we receive such as Forms W-2, 1099, 1098 and Form 5498, IRA Contribution Information. Current tax year information may not be complete until July. This transcript is available for up to 10 prior years using Get Transcript Online or Form 4506-T.