<Tr> <Th> Initial release </Th> <Td> September 2 , 2008 ; 9 years ago ( 2008 - 09 - 02 ) </Td> </Tr>
<Tr> <Th> Initial release </Th> <Td> September 2 , 2008 ; 9 years ago ( 2008 - 09 - 02 ) </Td> </Tr>
over a period of about -- -- -- -- years google established itself as the best search engine
over a period of about -- -- -- -- years google established itself as the best search engine
9 years
9 years