Could you plot the conventional oil as a percentage of the Total liquids? I think that this would result in an almost constant line.
I will do that maybe sometime in the near future, but that is basically what I was trying to show with the widening spread. It hasn't been constant. To give you a rough idea, the percentage in 1995 would have been about 90%, it has moved down steadily to about 86%. How significant this is is up to you.