 The "forest industry" includes forestry, timber, pulp and paper, and is often considered a logical development based on Finland's extensive forest resources, as 73% of the area is covered by forest. In the pulp and paper industry, many major companies are based in Finland; Ahlstrom-Munksjö, Metsä Board, and UPM are all Finnish forest-based companies with revenues exceeding €1 billion. However, in recent decades, the Finnish economy has diversified, with companies expanding into fields such as electronics (Nokia), metrology (Vaisala), petroleum (Neste), and video games (Rovio Entertainment), and is no longer dominated by the two sectors of metal and forest industry. Likewise, the structure has changed, with the service sector growing, with manufacturing declining in importance; agriculture remains a minor part. Despite this, production for export is still more prominent than in Western Europe, thus making Finland possibly more vulnerable to global economic trends.