Interactive advertising revenues will increase significantly from $45 bln in 2007 to $147 bln globally in 2012, representing a 23.4%, according to Kelsey Group. Interactive advertising, which comprises search (including local search), display advertising, classifieds and other interactive ad products, grew its share of global advertising revenues from 6.1% in 2006 to 7.4% in 2007. By 2012 Kelsey Group analysts expect the interactive share of global ad spending will reach 21%. During the forecast period (2007-2012), the United States will see interactive advertising revenues grow from $22.5 billion to $62.4 bln (22.6% CAGR), with interactive revenues in Canada increasing from $1.3 blnto $3.3 billion (21.3% CAGR).