The sudden rise in the price of a liter of 95 unleaded petrol to around 2.25 francs at the start of last week sounded like a warning. The days of almost immobile prices seem to be over. It is even painful to remember that in May 2020, in the midst of a pandemic, a liter of gasoline was only worth 1.38 francs on average. The liter of heating oil has had an even more explosive journey:
