Test runs were operated on the line from 18 July.
Can the people who are too old to operate on the front line not do some of the administrative work?
Since 4 May 2008, services have been operated on the line at weekends.
The older trains operate on the line for special events.
An additional train now operates on the line meaning services average around every 40 minutes.
Coaches dating from the 1890s operated on the line until the 1950s.
Routes 1, 3, 5 and 7 operate on the line.
In 1947 the first diesel engine was operated on the line.
Since 2003 the newer class 423 trains have operated on the line.
There have been eleven vessels to operate on the line.