<Tr> <Th> Founded </Th> <Td> March 15, 1965; 52 years ago (1965 - 03 - 15) New York City, New York, U.S. </Td> </Tr> <Tr> <Th> Founder </Th> <Td> Alan Stillman and Daniel R. Scoggin </Td> </Tr> <Tr> <Th> Headquarters </Th> <Td> Dallas, Texas, U.S. </Td> </Tr> <Tr> <Th> Number of locations </Th> <Td> 992 (March 2011) </Td> </Tr>

Where did the phrase thank god it's friday come from