You're kidding, right?  The report you quoted looks only at imports into Alberta, 1.5 to 2.0 billion dollars over 3 years.  The other side of the coin is here, 

https://www.albertacanada.com/files/albertacanada/SP-EH_AIME-10-year-review.pdf

In 2015 alone, Alberta exported 8.9 billion dollars of natural gas & natural gas liquids.  That's after the huge drop in price and volume that's occurred in the last few years.