If you did last year's return on TurboTax desktop software (it appears that you are using TurboTax Deluxe desktop software this year), TurboTax does not keep a copy of your return, but only if you using the Online product.
You can try to get a transcript of your return from the IRS (sometimes you can do it online).
Please see this TurboTax FAQ for more information - https://ttlc.intuit.com/replies/7362231