The schools have been operating for the past 22 years.

As of 2009, the club has been operating for 102 years.

The park operated for 93 years from 1886 until 1979.

The House system had operated for more than 100 years until recent changes were made.

From 1946, the building operated as a movie for two years.

The school has operated for years with two teachers and generally 20-30 students.

The line operated during the summer season and for the first few years was successful.

Small groups operated this way for the next 30 years.

Opened in 1969, it operated for only four or six years.

Scientists hope the system will operate for at least six years.