Elections for all members are held every four years, the next being in 2015.
Elections to the district council were held every 4 years from 1973 to the last election in 2007.
The competition is now held every two years in three changing categories.
The games were held every four years at the beginning, and the middle of the "Great Year".
These games are held every four years for Jewish athletes around the world.
Local elections are held every three years, last in 2006.
Documenta is held here every five years, this time at a cost of about $11.5 million.
After that it was held every five years and, from 1975, every four.
General elections are held every five years or less.
It is held every 22 years, most recently last summer.