Hyatt Hotels Corp. during the six months ending in June generated net revenues of $1.6 billion, 19 percent lower than a year earlier

, according to the company's S-1 filing with the U.S. Securities and Exchange Commission. Hyatt posted a net loss during the period of $36 million, down from a $173 million profit a year earlier. For full-year 2008, revenues of $3.8 billion topped the prior year's $3.7 billion, which followed three successive years of revenue growth, according to the document. Annual net earnings in that timeframe ranged from a low of $168 million in 2008 to a high of $336 million in 2005. As of June 2009, 54 percent of revenues came from owned and leased hotels as opposed to management, franchise and other fees. That percentage was roughly flat during the past five years.