At an incredible $9.98 per gallon, Turkey has the most expensive gasoline in the world - almost triple that of the US - closely followed by Norway at $9.97. In fact, as Bloomberg notes, the US can celebrate its good fortune at being only the 51st most expensive country in the world for gasoline.

So why is it then that so much is made of a rising gas price in the US? Why do we fear $3.80 when Turkey shows us things could be a lot worse? The simple answer lies in the chart below. The US spends the 7th most in the world on gasoline as a percentage of income and is by far the largest among developed economies as a percentage of income.