Jackson Hole real estate unit sales jumped 52 percent in May to 32 and sales volume climbed a whopping 172 percent to approximately $32.2 million compared to May 2011. The month’s significant increases were driven by several high-end building site sales and a comparison to one of the weakest months in 2011 when just 21 properties sold for $12.2 million. May saw six building site sales in Teton County,...