By Roshan Thomas (Reuters) -New Zealand's Fonterra posted stronger annual operating profit across its businesses and declared a record full-year dividend on Thursday, sending its shares to their highest level in more than seven years. The Auckland-headquartered firm ended 1.7% higher at NZ$6.10, their strongest close since February 2018. Operating profit across Fonterra's divisions rose, with its ingredients arm up 17.4% on better margins from an improved product mix and food service up nearly 9% on str ...