Complex sentence: In the latest RRC Associates survey on Skiing in Utah, they estimated that skiers and snowboarders spent about $1.29 billion in the 2012/13 season--a 10% increase from the previous year.
Split into simpler sentences: In the latest RRC Associates survey on Skiing in Utah, they estimated skiers and snowboarders spent about $1.29 billion in the 2012/13 season. This was a 10% increase from the previous year.