[antonomon]

It continuing unabated for 13 years is a historical anomaly, however

[awinder]

We’ve had 3 bull cycles that lasted around 13 years covering periods in the 50s, 80s and 90s.

https://www.uidaho.edu/-/media/UIdaho-Responsive/Files/Exten...

The +9% average is long-lived and covers periods with drawdowns so no abnormality there.