other disasters. It is also a method of suicide. In the United States, self-defenestration is among the least common methods of committing suicide (less than 2% of all reported suicides in the United States for 2005). There is an urban legend in the U.S. that many Wall Street investors autodefenestrated during the 1929 stock market crash. After the stock market collapse of 2008 this was alluded to by protestors brandishing a sign on Wall Street which said: "Jump, you fuckers!" Prevalence Jumping makes up only 3% of suicides in the US and Europe, which is a much smaller percentage than is generally perceived by the public. Jumping is surprisingly infrequent because tall buildings are often condo or office buildings not accessible to the general public, and because open-air areas of high buildings (i.e. rooftop restaurants or pools) are often surrounded by high walls that are built precisely to prevent suicides. Jumping makes up 20% of suicides in New York City due to the prevalence of publicly accessible skyscrapers. In Hong Kong, jumping (from any location) is the most common method of committing suicide, accounting for 52% of all reported suicide cases in 2006, and similar rates for the years prior to that. The Centre for Suicide Research and Prevention of the University of Hong Kong believes that it may be due to the abundance of easily accessible high-rise buildings in Hong Kong (implying that much of the jumping is out of windows or from roof tops). Most frequently used locations Terminology In the United States, jumper is a term used by the police and media organizations for a person who plans to fall or jump (or already has fallen or jumped) from a potentially deadly height, sometimes with the intention to die by suicide, at other times to escape conditions inside (e.g. a burning building). It includes all those who jump, regardless of motivation or consequences. That is, it includes people making sincere suicide attempts, those making parasuicidal gestures, people BASE jumping from a building illegally, and those attempting to escape conditions that they perceive as posing greater risk than would the fall from a jump, and it applies whether or not the fall is fatal. The term was brought to prominence in the aftermath of the September 11 attacks, in which two hijacked airliners―American Airlines Flight 11 and United Airlines Flight 175―were deliberately crashed into the Twin Towers of