The Television Bureau of Advertising forecast released Thursday indicates that spot advertising sales will be up 6.1 percent to 7.9 percent in 2006, and up 0.2 percent to 1.8 percent in 2007.

Since 2000 the TVB has issued forecasts for two years at a time because of the effects of Olympic and political advertising. “Odd years will always face tough comparisons to even years, when spending on both the Olympics and political ads shows up,” said Chris Rohrs, president of the TVB. “Spot is a two-year business cycle.”