Households across all income groups experienced increases in their average monthly household expenditure. Households in the 41st – 60th percentile income group) experienced the highest expenditure increase, at an average of 5.5 per cent per annum. This was followed by the lowest 20% households whose average monthly household expenditure increased by 4.5 per cent per annum, from $1,790 to $2,230, over the 5-year period.