Here is a list of Rapeseed Oil, Wheat, Barley, Potash,Uranium Oil and Natural Gas Prices since 1995. Some of Saskatchewan's main commodities.
Every peak in natural gas occurred in the winter due to demand except for the June 2008 peak which was because of speculation. It has not recovered.
Most people say resources are a huge part of Saskatoon's economy and they are right as our resources fill the provincial coffers which then trickles down. Just for an idea how much resources impact Saskatchewan Government revenues take a look here. At the peak of the commodity bubble in 2008, resource revenue was $4,612,408,000 , in 2009 resource revenues dropped to $1,910,624,000 after the market crash. For 2010, resource revenues rebounded rather nicely to 2,527,799,000. Off the peak of 2008, but the second strongest on record.