Courtesy of the Oil Drum:
Between now and 2020, production from the oil sands is likely to increase by about 2 million barrels per day - almost the equivalent of the arrival of another Venezuela on the world market.
I've been trying to get a handle on the effects that the development of the tar sands will have on Canada (I use the terms 'tar sands' and 'oil sands' interchangeably). I'm not done yet, but this graph shows why it's worth thinking about. A lot.