Key facts on NT youth detention inquiry

NT ROYAL COMMISSION BY THE NUMBERS:

- $54 million spent, $4 million cost blowout, jointly funded by federal and NT governments

- 53 hearing days over nine months

- extended twice, final report on September 30, 2017

- more than 210 people testified, including 40 vulnerable witnesses

- more than 480 witness statements, 300 written submissions from organisations

- visited 25 communities

- 43 site visits

- toured seven other jurisdictions

- more than 50 previous reviews

- NT has the nation's highest rate of young people in detention and child protection services, by a considerable margin

- 94 per cent of those kids locked up and 89 per cent in care are Aboriginal

- the number of youngsters entering both detention and out of home care has doubled in the past decade.