<Tr> <Td> 000000002013 - 12 - 31 - 0000 December 31, 2013 </Td> <Td> 7003123000000000000 ♠ 1,230 </Td> <Td> 7002275000000000000 ♠ 275 </Td> <Td> 0.97% </Td> </Tr> <Tr> <Td> 000000002014 - 12 - 31 - 0000 December 31, 2014 </Td> <Td> 7003139000000000000 ♠ 1,390 </Td> <Td> 7002365000000000000 ♠ 365 </Td> <Td> 0.64% </Td> </Tr> <P> On October 1, 2005, Facebook expanded to twenty - one universities in the United Kingdom and others around the world . Facebook launched a high school version in September 2005, which Zuckerberg called the next logical step . At that time, high school networks required an invitation to join . Facebook later expanded membership eligibility to employees of several companies, including Apple Inc. and Microsoft . On December 11, 2005, universities in Australia and New Zealand were added to the Facebook network, bringing its size to 2,000 + colleges and 25,000 + high schools throughout the United States, Canada, Mexico, the United Kingdom, Australia, New Zealand, and Ireland . Facebook was then opened on September 26, 2006 to everyone aged 13 and older with a valid e-mail address . </P> <P> Late in 2007, Facebook had 100,000 business pages, allowing companies to attract potential customers and tell about themselves . These started as group pages, but a new concept called company pages was planned . </P>

When was facebook first opened to the public