It has been very meaningful in certain locations. In Saskatchewan we've seen it ramp up from almost zero, three or four years ago, to today where 15% to 20% of the oil leaving our province leaves in railcars.
In North America in some places it's even far larger than that. North Dakota is sending, I believe, the majority of the oil produced; over half in North Dakota leaves their state in railcars. It is picking up the slack in North America where pipeline capacity is challenged.