The proportion of the total population who are Christian fell from 71% in 1996 to around 61.1% in 2011, while people affiliated with non-Christian religions increased from around 3.5% to 7.2% over the same period. Buddhism increased most rapidly from 1.1% to 2.5%. Increased immigration from South-East Asia has been a major factor in this growth, but Australians of Anglo-Celtic origin have also shown increasing interest in Buddhism. Islam increased during the period from 1.1% to 2.2% with diverse communities concentrated mainly in Sydney and Melbourne. The history of the Jews in Australia dates back to the First Fleet, which brought Jewish convicts to Sydney in 1788. Today, many Jews in Australia originated as refugees and Holocaust survivors who arrived during and after World War II. Hindus came to Australia as laborers and merchants during the 19th century and numbers increased dramatically from the 1960s, more than doubling between 1996 and 2006.