<Table> <Tr> <Th> Series </Th> <Th> Start date </Th> <Th> End date </Th> <Th> Episodes </Th> </Tr> <Tr> <Td> </Td> <Td> 7 August 1966 </Td> <Td> 18 September 1966 </Td> <Td> 7 </Td> </Tr> <Tr> <Td> </Td> <Td> 14 May 1967 </Td> <Td> 6 September 1967 </Td> <Td> 12 </Td> </Tr> <Tr> <Td> </Td> <Td> 12 May 1968 </Td> <Td> 13 September 1968 </Td> <Td> 13 </Td> </Tr> <Tr> <Td> </Td> <Td> 14 May 1969 </Td> <Td> 3 September 1969 </Td> <Td> 11 </Td> </Tr> <Tr> <Td> 5 </Td> <Td> 30 April 1970 </Td> <Td> 18 September 1970 </Td> <Td> 14 </Td> </Tr> <Tr> <Td> 6 </Td> <Td> 21 April 1971 </Td> <Td> 24 September 1971 </Td> <Td> 14 </Td> </Tr> <Tr> <Td> 7 </Td> <Td> 19 May 1972 </Td> <Td> 29 September 1972 </Td> <Td> 14 </Td> </Tr> <Tr> <Td> 8 </Td> <Td> 18 May 1973 </Td> <Td> 14 September 1973 </Td> <Td> 14 </Td> </Tr> <Tr> <Td> 9 </Td> <Td> 3 May 1974 </Td> <Td> 20 September 1974 </Td> <Td> 13 </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 23 May 1975 </Td> <Td> 15 October 1975 </Td> <Td> 15 </Td> </Tr> <Tr> <Td> 11 </Td> <Td> 21 May 1976 </Td> <Td> 1 October 1976 </Td> <Td> 16 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> 22 April 1977 </Td> <Td> 2 November 1977 </Td> <Td> 16 </Td> </Tr> <Tr> <Td> 13 </Td> <Td> 21 April 1978 </Td> <Td> 8 November 1978 </Td> <Td> 16 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> 11 May 1979 </Td> <Td> 6 November 1979 </Td> <Td> 17 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> 9 May 1980 </Td> <Td> 10 October 1980 </Td> <Td> 17 </Td> </Tr> <Tr> <Td> 16 </Td> <Td> 29 May 1981 </Td> <Td> 6 November 1981 </Td> <Td> 15 </Td> </Tr> <Tr> <Td> 17 </Td> <Td> 28 May 1982 </Td> <Td> 29 October 1982 </Td> <Td> 15 </Td> </Tr> </Table> <Tr> <Th> Series </Th> <Th> Start date </Th> <Th> End date </Th> <Th> Episodes </Th> </Tr> <Tr> <Td> </Td> <Td> 7 August 1966 </Td> <Td> 18 September 1966 </Td> <Td> 7 </Td> </Tr> <Tr> <Td> </Td> <Td> 14 May 1967 </Td> <Td> 6 September 1967 </Td> <Td> 12 </Td> </Tr>

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