After more than 35 years in the No. 1 spot, Graybar Electric Co., Clayton, Mo., fell to the No. 2 spot as WESCO Distribution, Pittsburgh, inched ahead with $4.4 billion in 2005 sales, an 18.2 percent upswing. WESCO attributed the increase to market-share growth and acquisitions. Although Graybar declined to disclose revenue in its Top 200 survey, employee-owned Graybar’s 2005 annual report lists sales of $4.3 billion, a 5.5 percent increase over the $4.1 billion in 2004 sales Graybar reported in last year’s Top 200 survey.