Of that estimated $273.3 billion, about $117.1 billion will be spent on group travel — meetings and conventions, conferences, incentive trips and the like. And $33.1 billion will be spent in the United States on international travel, the trade group says in a report preceding its annual convention, which will be held early next month in San Diego. No matter how you parse it, that’s a whole lot of spending for corporate travel managers and individual business travelers to evaluate and track. Another report is coming out this week, from Concur, the travel expense management company, that seeks to “shine a bright light on a big chunk of data” for business travel spending, said Robson Grieve, executive vice president for marketing. An early look at the Concur study revealed, which examined individual travel expense accounts totaling $50 billion at 18,000 corporate clients last year. Among the findings I found most interesting: Travelers at small and midsize companies on average spent significantly more in every expense category — hotels, airfares, dining and entertainment — than those at large corporations. Get the full story at The New York Times