XM Canada has said that they've more than doubled their subscriber base since 2006 for their fiscal fourth quarter ending August 31st

XM Canada ended their fiscal year with 306,000 subscribers. Note that back in March, XM Canada changed how they are reporting subscribers in an effort to align subscriber numbers "more closely with industry norms." XM Canada's subscriber numbers now include vehicles factory-activated when automakers have agreed to pay for a portion or all of the trial period service.

Sirius Canada announced they broke 300,000 subscribers over seven months ago.

[Press Release]