See this TurboTax support FAQ for a prior year AGI - https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/01/25947
You can also get free transcripts of your federal return from the IRS - http://www.irs.gov/Individuals/Get-Transcript
See this TurboTax support FAQ for the current year AGI - https://ttlc.intuit.com/community/agi/help/where-can-i-find-my-current-year-agi/00/26310
Click on Tax Tools on the left side of the screen. Click on Tools. Click on View Tax Summary.
If you are filing as Married Filing Jointly (MFJ), you do not have an "individual" AGI. The AGI, shown on line 7 of form 1040, is your AGI, and your spouse's AGI.
If you need your individual income for some purpose (e.g. loan application), you will have to calculate it manually.