<Tr> <Th> 23 </Th> <Td> "Hello" </Td> <Td> Richie, Lionel Lionel Richie </Td> <Td> 1984 </Td> <Td> </Td> </Tr> <Tr> <Th> 24 </Th> <Td> "I Know Him So Well" </Td> <Td> Paige, Elaine Elaine Paige and Barbara Dickson </Td> <Td> 1985 </Td> <Td> </Td> </Tr> <Tr> <Th> 25 </Th> <Td> "Imagine" </Td> <Td> Lennon, John John Lennon </Td> <Td> 1981 </Td> <Td> </Td> </Tr> <Tr> <Th> 26 </Th> <Td> "Don't Stand So Close to Me" </Td> <Td> Police, The The Police </Td> <Td> 1980 </Td> <Td> </Td> </Tr>

Who was the biggest selling artist of the 80s