This is the largest change in any single expenditure category. The bulk of this change took place over the past decade and largely reflects the rise in interest payments on mortgage debt due to higher levels of debt relative to income.
7  See Berger-Thomson L, Chung E and R McKibbin (2009), “Estimating Marginal Propensities to Consume in Australia Using Micro Data”, RBA Research Discussion Paper No. 2009–07  BIS central bankers’ speeches  7  The second longer-term change is a decline in the share of spending on goods and an increase in the share of spending on (non-housing) services.