The weekly demand for gasoline in Charlotte NC is best modeled according to the Triangular distribution between 9.65 million and 12.88 million gallons, with a peak (mode) of 11.67 million gallons. The city receives 12 million gallons of gasoline on weekly basis; however possible shortages on a few weeks during the year may occur. Approximately during how many weeks of the year is the city expected to experience gasoline shortages?

Round your answer to the nearest whole number. For example, "1.4321 weeks" should be entered as "1".