Yosemite National Park conducted a winter survey for one week in February 2008. There was a 60% response rate. The entire survey and results can be viewed at the Yosemite National Park Visitor Study: Winter 2008 . Yosemite National Park had a comprehensive survey conducted for one week in July 2009. In it, 1,326 visitor groups were systematically selected from all five park entrance stations. There was a 65% response rate. The entire survey and results can be viewed at Yosemite National Park Visitor Study: Summer 2009 . 91% of visitors were U.S. residents; 89% of those were from California. 9% of visitors were international visitors. With 9% each from Germany, Korea, Taiwan, United Kindgom.