How often do you move?

Phaedrus: “You are also more stable than I am ;-) in the sense that I have lived in 7 different places since 2011. Even before that my late mother would often complain that my frequency of moving had caused her to run out of space in her telephone book. My sister, on the other hand has lived in 2 places since 1970 and one brother is in his second house since he left the navy in 1982.”

Question: How often do you move?