Global market research industry revenues reached US $33.5 billion in 2011, representing a 3.8% year-over-year increase, though that growth was a more modest 0.4% after adjusting for inflation, per details from an Esomar report [PDF] released in September 2012. Revenue growth rates differed significantly from one region to the next. When adjusted for inflation, North America and the Asia-Pacific (both at 1.7%) saw the most rapid growth, while Europe and the Middle East and Africa (-1.3%) both saw the biggest declines.
Latin America joined North America and the Asia-Pacific in seeing positive net growth, up 1.3% year-over-year. Read the rest at MarketingCharts.