21. The line is prospected to cost over 20 billion Norwegian krone ( NOK ). 22. The project cost 32 million Norwegian krone and was opened on 21 August 2007. 23. In 2007, the city sold the stadium to Sentrumsg�rden for 320 million Norwegian krone . 24. Economists predict that the Norwegian krone will remain strong, unless oil prices start tumbling. 25. The property was bought by V�ler Municipality for 46 million Norwegian krone in 2007. 26. The base became operational in September 2009 after investments of 70 million Norwegian krone . 27. All citizens are otherwise responsible for the annual deductible-which averages around 2040 Norwegian krone . 28. Kongsg�rdbakken was selected, costing 2 million Norwegian krone ( NOK ) less than Kjevik. 29. The new airport cost 178 million Norwegian krone and opened on 9 September 1999. 30. The project was estimated to cost 267 million Norwegian krone .