response: Oh yes?  In 2008, horse betting generated about 115 billion US dollars worldwide!
original_response: I am not relly into betting but do kow that in 2008 horse betting generated 115 billion dollars
history: I am thinking on betting in horse racing.
knowledge: While horses are sometimes raced purely for sport, a major part of horse racing's interest and economic importance lies in the gambling associated with it, an activity that in 2008 generated a worldwide market worth around US$115 billion.