Can I check to see if I have unclaimed charitable donation amounts from the years 2013, 2014, 2015, 2016?

If you are registered for the My Account service on the Canada Revenue Agency website, you can log into your account and see your returns.  Also, you can contact the Canada Revenue Agency at 1 800 959 8281 to inquire about the number of donations that you claimed for those years.

Thks. Nothing shows under Schedule 9 or in the Donations box, but my concern is that I may've submitted amounts that I didn't claim? How can I make sure their aren't outstanding amounts? Or, would that show up on my Transfer for Next Year or somewhere on the CRA submission?