Yes, a different program is needed every year. The TurboTax program can only prepare returns for that one tax year. 2016 software for a 2016 return, 2015 software for a 2015 return, etc.
You can buy past versions of TurboTax at the link below, or you may be able to find them discounted at a reputable authorized retailer like Amazon, etc. Past-year returns cannot be efiled; they have to be printed, signed, and mailed.
https://turbotax.intuit.com/personal-taxes/past-years-products/
