It estimated that between 1998 and 2006, total productivity fell by 0.2 per cent annually.

In that case, the objects of measurement are components of total productivity, and interpreted correctly, these components are indicative of productivity development.

This example reveals the difficulty to interpret the total productivity change correctly.

If we are on the part of increasing returns on the production function, the combination of production volume increase and total productivity increase leads to improved production performance.