Did I see that in 2013? No.
I rely on what Canada Post tracking tells me about who is receiving their mail and where. I would have to say, according to tracking, that 90% of my Canadian customers get their parcels delivered to their door. There's a different final message on the tracking item line that shows when it's been delivered to a community mailbox. From that information, I have extrapolated that only 10% of my customers actually use a community mailbox.
I have been told by other eBay sellers that it's naive of me to believe that, because the drivers don't always enter the proper code when they're delivering something, so having that final line say it's been delivered to a mailbox is not necessarily the indicator that it was. This is coming from eBay sellers who are also consumers of Canada Post and who order online, who say they get all their mail delivered to a community mailbox, yet when their tracking shows it's delivered, it doesn't necessarily show it as having been delivered that way.