<Table> <Tr> <Th> Date </Th> <Th> City </Th> <Th> Country </Th> <Th> Venue </Th> </Tr> <Tr> <Td> 14 February 1972 </Td> <Td> Singapore </Td> <Td> Singapore </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> 16 February 1972 </Td> <Td> Perth </Td> <Td> Australia </Td> <Td> Subiaco Oval </Td> </Tr> <Tr> <Td> 18 February 1972 </Td> <Td> Adelaide </Td> <Td> Memorial Drive Park </Td> </Tr> <Tr> <Td> 19 February 1972 </Td> </Tr> <Tr> <Td> 20 February 1972 </Td> <Td> Melbourne </Td> <Td> Kooyong Stadium </Td> </Tr> <Tr> <Td> 25 February 1972 </Td> <Td> Auckland </Td> <Td> New Zealand </Td> <Td> Western Springs Stadium </Td> </Tr> <Tr> <Td> 27 February 1972 </Td> <Td> Sydney </Td> <Td> Australia </Td> <Td> Sydney Showground </Td> </Tr> <Tr> <Td> 29 February 1972 </Td> <Td> Brisbane </Td> <Td> Brisbane Festival Hall </Td> </Tr> </Table>
in which year was led zepplin refused entry into singapore because the band members had long hair
1972