I was using Saudi oil as the standard, but the same principles apply. You mentioned Canada, early last year the Canadian dollar was at $0.75 US dollars per Canadian dollar. Today it is at about 0.92, over a 20% increase in direct costs to the dollar.
Our dollar is weak, so it costs us more to buy the same goods. The people that benefit from this though is the US tourist industry. Look at it this way:
A hotel in NYC charges $175.00 a night. In 2000 that hotel cost a European $230.00 euro's to stay there. Today that same hotel costs (assume room rate as constant) 135.00 euro.
That is how weak the dollar is today.
Plus lets not forget all the other taxes the government takes, such as the tax on fuel trucks delivering pipes to oil fields, taxes on wages oil workers make, land use taxes, aggregate taxes, environmental taxes, road levy taxes, tire taxes on the tires the trucks delivering supplies to the oil fields, taxes on ALL supplies used in the oil industry, corporate taxes, taxes on that cup of coffee and dough nuts oil workers stop for at coffee break time...
It’s all passed right back to the consumer who buys that gallon of gas. Much more tax is taken than the final 18 cents at the pump.