Statistics Canada released their "Impaired Driving in Canada, 2015" report on December 14th. The highest impaired driving rates were reported in the Northwest Territories, Yukon and Saskatchewan. The lowest rates were in Ontario, Quebec and Manitoba.
So there is still some work to do, especially during the holiday season. An example of such work is from the Minnesota "Over The Limit - Under Arrest" program from a few years ago, which included arresting an elf for impaired driving.