now 14 suburbs; South Canberra: settled from the 1920s to '60s, 13 suburbs; Woden Valley: first settled in 1963, 12 suburbs; Belconnen: first settled in 1967, 25 suburbs; Weston Creek: settled in 1969, 8 suburbs; Tuggeranong: settled in 1974, 19 suburbs; Gungahlin: settled in the early 1990s, 18 suburbs although only 15 are developed or under development; Molonglo Valley: first suburbs currently under construction. The North and South Canberra districts are substantially based on Walter Burley Griffin's designs. In 1967, the then National Capital Development Commission adopted the "Y Plan" which laid out future urban development in Canberra around a series of central shopping and commercial area known as the 'town centres' linked by freeways, the layout of which roughly resembled the shape of the letter Y, with Tuggeranong at the base of the Y and Belconnen and Gungahlin located at the ends of the arms of the Y. Ancestry and immigration At the , the most commonly nominated ancestries were: The showed that 32.5% of the ACT's inhabitants were born overseas. Of inhabitants born outside of Australia, the most prevalent countries of birth were India, England, China, Nepal and New Zealand. 2.0% of the population, or 8,949 people, identified as Indigenous Australians (Aboriginal Australians and Torres Strait Islanders) in 2021. Language At the , 71.3% of people spoke only English at home. The other languages most commonly spoken at home were Mandarin (3.2%), Nepali (1.3%), Vietnamese (1.1%), Punjabi (1.1%), Hindi (1.0%). Religion The most common responses in the for religion in the territory were No Religion (43.5%), Catholic (19.3%), Anglican (8.2%), Not stated (5.2%) and Hinduism (4.5%). Culture Education Almost all educational institutions in the Australian Capital Territory are located within Canberra. The ACT public education system schooling is normally split up into Pre-School, Primary School (K-6), High School (7–10) and College (11–12) followed by studies at university or CIT (Canberra Institute of Technology). Many private high schools include years 11 and 12 and are referred to as colleges. Children are required to attend school until they turn 17 under the ACT Government's "Learn or Earn" policy. In February 2004 there were 140 public and non-governmental schools in ACT; 96 were operated by the Government and 44 are non-Government. In 2005, there were 60,275 students in the ACT school system. 59.3% of the students were enrolled in government schools with the remaining 40.7% in non-government schools. There were 30,995