There are a couple of ways to get info from your 2015 tax return in order to start your 2016 return. The first is to pull the carryforward amounts from your last year's notice of assessment if you have a paper copy around. 

If not, register for your my CRA account here: http://www.cra-arc.gc.ca/myaccount/ Once you have this login, TurboTax will prompt you to sign-in and automagically download all of your 2015 carryover amounts to start your 2016.