When the exchange rate depreciates, these at-the-dock prices increase. This relationship hasn't changed much over the past 25 years. In the two decades up to 2010, these changes in import prices at the docks tended to be passed on to the retail prices faced by consumers.
Of course, the United States was the epicentre of the financial crisis. The recovery in the labour market there has been weak, restraining the growth in labour income. Household balance sheets remain under pressure from elevated debt levels and the dramatic collapse in home prices.