BUSINESS TRAVEL SPENDING SET TO GROW 3.4% IN 2014  London, UK, 2013-09-27 — /travelprnews.com/ — The Global Business Travel Association (GBTA), the voice of the global business travel industry, announces the results of its latest GBTA BTI™ Outlook – Western Europe report, a semi-annual analysis of the five most critical business travel markets in Europe: Germany,… Read the full press release