I'm pretty sure only 1 or maybe 2 years.
Hope this helped. Have a great day! :D
A form of collective social behavior that persists over a long period and gradually finds place as a tradition is called a custom. Examples:
Drinking a glass of wine with each meal--French custom (although that might changing due to economic woe and other variables)
Saying a prayer before each meal--Latin American custom (although it's a custom in other places too, and not every Latin American does this)
because they thought it favored the wealthy
