This results in lower production costs. 6  BIS Review 47/2007  The strong growth in labour productivity does not seem to reflect an increase in the real capital behind each person-hour worked, but rather a considerable improvement in labour and capital efficiency. 2 Intensified competition in product markets may have contributed to the subdued rise in prices. New operators have entered markets that were previously fairly sheltered from competition, for example in the grocery trade, building materials, telecommunications, banking and insurance. With general confidence that inflation will be kept in check and that petroleum revenues are only gradually phased into the economy, low import prices, high prices and good market opportunities for our export goods, an ample supply of foreign labour and high productivity growth have made it possible to combine high growth with low inflation. It is possible that some of the driving forces that have boosted the growth potential of the Norwegian economy and restrained inflation may now diminish. Prices for imported goods are now falling at a slower pace. The shift towards imports from low-cost countries was less pronounced in 2006 than in previous years. The rise in prices for oil and other commodities over several years has resulted in a somewhat faster rate of increase in producer and export prices among our trading partners. Measured in foreign currency, prices for imported consumer goods rose in 2006.
Prices for imported consumer goods showed a considerable smaller decline than in the three preceding years. Our inflation projections were revised downwards in the light of actual developments through 2006. Underlying inflation has recently picked up somewhat and is more closely in line with that expected one year ago. At the same time as inflation has been low, growth in the mainland economy has been strong, and stronger than expected. The Norwegian economy is booming, after a strong upturn since summer 2003. The upturn followed a period of slow growth from 1998 and a mild recession in 2002 and into 2003. Growth has been stronger and occurred earlier than in the cyclical upturn in the mid-1990s. When Norges Bank reduced the key policy rate in 2003, demand and output rapidly recovered. Strong productivity growth supported the upturn, which was reflected in exports, petroleum investment and  BIS Review 47/2007  3  after a period in general government demand. So far in this cyclical upturn, the mainland economy has grown by an average of a little more than 4 per cent annually. The upturn is now in a mature phase. Even though production increased rapidly, it took a long time for employment to pick up. Employment growth was lower for a long period compared with the upturns in the 1980s and 1990s. Moreover, high growth in labour productivity partly reflected a marked fall in sickness absence in 2004.