IEG’s 32nd annual year-end industry review and forecast sees steady sponsorship spending growth in 2017, with the caveat that caution on the part of brand and corporate marketers could grow into concern as the year progresses, thus limiting their willingness to commit additional dollars to partnerships.For now, global sponsorship spending is projected to rise 4.5 percent in 2017 to $62.8 billion from the $60.1 billion spent in 2016. That growth rate is nearly equal to last year’s 4.6...