Year 2000 is the period when the productivity growth rate was at minimum ie., 0.7. Degrowth refers to those years where productivity growth rate was in negative. Minimum growth rate refers to the minimum positive growth rate achieved. Solution Year 2000 is the period when the productivity growth rate was at minimum ie., 0.7. Degrowth refers to those years where productivity growth rate was in negative. Minimum growth rate refers to the minimum positive growth rate achieved..