From Moody’s Investor services:
The performance of Australian prime residential mortgage-backed securities (RMBS) deteriorated over the three months ended 31 December 2017 (Q4 2017).
Specifically, the 30+ day delinquency rate for prime RMBS increased slightly to 1.51% at 31 December 2017 from 1.50% at 30 September 2017 and 31 December 2016 respectively.