ZEELAND, MI (WHTC) - Despite a dip in net sales and income, along with flat earnings, in the past three months, Gentex officials announced yesterday its first quarterly dividend increase in more than a year. Investors as of July 5th will be getting 14 cents a share on July 19th, a penny more than when 13-cent payouts began during the final three months of 2011. No reason was given by the Zeeland-based specialty parts maker for this dividend hike.