The demographics of the retirement rate across all western economies is far in excess of any historical reference point; the data simply does not exist.
Given the impact on asset markets, health care provision and even considerations of tax I would treat any prediction of advancement based on any historical metric to be of limited value.
Governments the world over are struggling with an aging workforce they are simply concerned with tax and spend, not service provision. On all western economies measures they all begin a great stagnation for at least a decade commencing now and continuing country after country.