Passage: The 2005 season was the first to observe more tropical storms and cyclones in the Atlantic than in the West Pacific; on average, the latter experiences 26 tropical storms per year while the Atlantic only averages 12. This event was repeated in the 2010 season; however, the 2010 typhoon season broke the record for the fewest storms observed in a single year, while the 2005 typhoon season featured near-average activity.

Question: When were the tropical storms decreasing?
2010