<Tr> <Td> 1971 Details </Td> <Td> Barcelona, Spain </Td> <Td> Pakistan </Td> <Td> 1--0 </Td> <Td> Spain </Td> <Td> India </Td> <Td> 2--1 after extra time </Td> <Td> Kenya </Td> </Tr> <Tr> <Td> 1973 Details </Td> <Td> Amstelveen, Netherlands </Td> <Td> Netherlands </Td> <Td> 2--2 (4--2) Penalty strokes </Td> <Td> India </Td> <Td> West Germany </Td> <Td> 1--0 </Td> <Td> Pakistan </Td> </Tr> <Tr> <Td> Details </Td> <Td> Kuala Lumpur, Malaysia </Td> <Td> India </Td> <Td> 2--1 </Td> <Td> Pakistan </Td> <Td> West Germany </Td> <Td> 4--0 </Td> <Td> Malaysia </Td> </Tr> <Tr> <Td> 1978 Details </Td> <Td> Buenos Aires, Argentina </Td> <Td> Pakistan </Td> <Td> 3--2 </Td> <Td> Netherlands </Td> <Td> Australia </Td> <Td> 4--3 </Td> <Td> West Germany </Td> </Tr>

When did india win the hockey world cup
find me the text answering this question