While the U.S. lodging industry recovery began in 2010, it was in 2011 that the vast majority of hotels benefitted from that comeback, according to data just released by PKF Hospitality Research. Last year, 81 percent of the properties that participated in the firm's Trends in the Hotel Industry annual survey reported increases in total revenue, while 72 percent reported growth in profits. A sample of nearly 7,000 financial statements were reviewed for the study. Participating hotels saw profits increase by an average of 13 percent in 2011. Resort properties led the way with an 18 percent gain, followed by full-service hotels, which enjoyed an average growth of 15 percent in profits. "The good news is not isolated to a select few property categories," noted PKF-HR president R. Mark Woodworth, "but rather, all hotel types were able to enjoy gains on the bottom line." Woodworth also pointed out that the top two categories in profit gains, resorts and full-service hotels, also enjoyed the highest gains in average daily rate for the year. U.S. hotels as a whole are expected to experience significant revenue gains through 2015, according to PKF-HR's March 2012 Hotel Horizons.