<Table> World Wide Web <Tr> <Td_colspan="2"> The web's logo designed by Belgian Robert Cailliau </Td> </Tr> <Tr> <Th> Type </Th> <Td> Aspect of history </Td> </Tr> <Tr> <Th> Inventor </Th> <Td> Tim Berners - Lee </Td> </Tr> <Tr> <Th> Inception </Th> <Td> 1989 / 1990 </Td> </Tr> <Tr> <Th> Available </Th> <Td> Worldwide </Td> </Tr> </Table> <Tr> <Td_colspan="2"> The web's logo designed by Belgian Robert Cailliau </Td> </Tr>

When did the world wide web become available