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In the past year, global media advertising revenues jumped 5.5 percent to reach $512 billion, Magna Global estimates. But in 2015, growth will likely slow to 4.8 percent.
The forecast is in line with two others released by GroupM and ZenithOptimedia, which both predict growth of around 4.9 percent next year, The Wall Street Journal reported.
Special "even-year" events—the Olympic Winter Games, FIFA World Cup and U.S. midterm elections—helped spur larger numbers this year. While next year's grown won't match 2014, Magna noted it will be higher than the last odd year, 2013, which saw 4.2