<Tr> <Td> Users in the developed world </Td> <Td> 51% </Td> <Td> 67% </Td> <Td> 81% </Td> </Tr> <Tr> <Td_colspan="4"> Estimate . Source: International Telecommunications Union . </Td> </Tr> <P> The Internet continues to grow, driven by ever greater amounts of online information and knowledge, commerce, entertainment and social networking . During the late 1990s, it was estimated that traffic on the public Internet grew by 100 percent per year, while the mean annual growth in the number of Internet users was thought to be between 20% and 50% . This growth is often attributed to the lack of central administration, which allows organic growth of the network, as well as the non-proprietary nature of the Internet protocols, which encourages vendor interoperability and prevents any one company from exerting too much control over the network . As of 31 March 2011, the estimated total number of Internet users was 2.095 billion (30.2% of world population). It is estimated that in 1993 the Internet carried only 1% of the information flowing through two - way telecommunication, by 2000 this figure had grown to 51%, and by 2007 more than 97% of all telecommunicated information was carried over the Internet . </P> <P> The Internet is a global network that comprises many voluntarily interconnected autonomous networks . It operates without a central governing body . The technical underpinning and standardization of the core protocols (IPv4 and IPv6) is an activity of the Internet Engineering Task Force (IETF), a non-profit organization of loosely affiliated international participants that anyone may associate with by contributing technical expertise . To maintain interoperability, the principal name spaces of the Internet are administered by the Internet Corporation for Assigned Names and Numbers (ICANN). ICANN is governed by an international board of directors drawn from across the Internet technical, business, academic, and other non-commercial communities . ICANN coordinates the assignment of unique identifiers for use on the Internet, including domain names, Internet Protocol (IP) addresses, application port numbers in the transport protocols, and many other parameters . Globally unified name spaces are essential for maintaining the global reach of the Internet . This role of ICANN distinguishes it as perhaps the only central coordinating body for the global Internet . </P>

Which of the following are used to view documents on the internet and world wide web