Form 8606, Line 22 - Include 2014 403b rollover in Roth basis?

Hi, I need to fill out form 8606 this year, and I'm not sure what all I need to include on Line 22 for the Roth IRA basis. I know I include all prior contributions I made to my Roth IRA, which seems simple enough, but I'm not sure if the initial rollover I did when I first opened the Roth account counts as a contribution for the purposes of calculating the basis. It was a rollover from a 403b in 2014, reported at the time on a 1099-R, distribution code H for a "direct rollover of a designated Roth account distribution to a Roth IRA." Should that rollover amount be considered a contribution for the purpose of calculating the Roth basis on Line 22 on Form 8606? Do I include the rollover or not? Thank you!