With policymakers pursuing wellbeing and more inclusiveness, "we have an upending of old economic models and structural changes in things such as average inflation, wages growth, house prices and, of course, interest rates," Alexander says.
"Increasingly, this past decade I've spent less time forecasting and more time simply explaining to people some of these bigger structural changes and their implications," he says.
"There are more changes to come and, while I will be leaving the bank, I'll probably still look to keep people informed as a speaker in some capacity – though maybe at fewer functions than the hundred or so per annum of recent years!
"Many thanks to all those people who have attended my presentations and read, perhaps even commented on, the BNZ Weekly Overview, which was first produced in 1998."
Bank of New Zealand has been owned by National Australia Bank since 1992.