Australia has no official state religion and the Australian Constitution prohibits the Commonwealth government from establishing a church or interfering with the freedom of religion. According to the 2011 Australian Census, 61.1% of Australians were listed as Christian. Historically, this proportion has been higher and a growing proportion of the population define themselves as irreligious, with 22.3% of Australians declaring "no religion" on the census. There are also growing communities of various other religions. From the early decades after federation, people from diverse religious backgrounds have held public office. The first Jewish Governor General, Isaac Isaacs, was selected by the first Catholic prime minister, James Scullin, in the 1930s. In recent times, some prime ministers have identified as religious, others as non-religious.