Wheat production decreases by 1.5% each month (previous month's production times -1.5%), causing the price of wheat, in units of shoes, to increase each month. It will require more and more pairs of shoes to buy each bushel of wheat (the blue line).

Conversely, the price of shoes, in units of wheat, declines each month. It will require fewer and fewer bushels of wheat to buy one pair of shoes (the red line).

Exchange ratios again remain reciprocal throughout the 60 month period.