AMSTERDAM, Sept 20 (Reuters) - GVNV.AS::**Keeps medium average revenue growth target of at least 5 percent.**Target assumes constant exchange rates.**Revenue target comprises 3 pct comparable growth, 1 pct growth from store openings and 1 pct growth from acquisitions..**Company sees an increase in medium or large acquisitions.**Company says adjusted EBITDA growth "in line" with revenue growth.**Capex will remain at 4-6 pct of revenue.**Dividend payout ratio will remain at 25-50 pct.**Company will increase dividend per share "over time".