Question: In what year did the ferry service for which Corporation Pier station served as a ticket office and waiting room stop operating?

Context paragraphs:
Cookham railway station: Cookham railway station serves the village of Cookham, Berkshire, England.  Great Western Railway trains between and serve the station, as well as through services to and from London Paddington in peak hours Monday to Friday.  The station has a ticket office, waiting room and toilets.

Huntington station (West Virginia): Huntington is an Amtrak station in Huntington, West Virginia.  Located at 1050 8th Avenue, the station consists of a platform on the south side of the east-west tracks, a small parking lot, and a small building in between.  The station contains a waiting room and ticket office.  Huntington is served by the "Cardinal" route.  The one story building was constructed to a standard design that Amtrak developed in the 1970s and used at locations throughout the country for the next two decades.  Typical features included at Huntington are concrete block walls, floor to ceiling windows and a black, cantilevered roof.

Hull Victoria Pier railway station: Corporation Pier station was the Manchester, Sheffield and Lincolnshire Railway's booking office for their ferry service between Corporation Pier, Hull and New Holland Pier in Lincolnshire.  It was not rail connected, but served as a ticket office and waiting room for the Humber Ferry.

Rock Island Depot (Sioux Falls, South Dakota): The Rock Island Depot is a historic railroad station located at 201 East 10th Street in Sioux Falls, South Dakota.  The station opened in 1886 to serve the Burlington, Cedar Rapids and Northern Railway, a predecessor of the Rock Island.  The ashlar and wood building has a Richardsonian Romanesque design with a side-facing stone gable and an octagonal turret.  The interior of the station includes a waiting room, a ticket office, and the station agent's quarters.  As the railroad network spread through South Dakota, Sioux Falls became the state's primary commercial and transportation hub due to its established station.  The station served passenger trains through Sioux Falls until 1970.

Page's Park railway station: Pages Park railway station is a railway station serving the southern area of Leighton Buzzard.  Pages Park is the terminus of the heritage narrow gauge Leighton Buzzard Light Railway.  At present the station consists of two platforms, a shed and a number of temporary buildings acting as the waiting room, ticket office and cafe.  There are plans to develop the station, but these can only proceed when the station site is secured.

Jersey City Ferry: The Jersey City Ferry was a major ferry service that operated between Jersey City and Cortland Street in lower Manhattan for almost 200 years (1764-1949).  The ferry was notable for being the first its introduction of steam power in 1812, making it the first ferry service in the world to do so.  The ferry's history was closely tied to the Pennsylvania Railroad's station in Jersey City at Exchange Place, which gradually fell into disuse after the railroad opened the North River Tunnels and Penn Station in 1910.  Ferry service from lower Manhattan to Jersey City continued via the even older Communipaw ferry which operated from the adjacent Liberty Street Ferry Terminal until this service was also discontinued in 1967.  In 1986 ferry service was revived and today it is operated by New York Waterway.

Racine Depot: The Racine Depot is a historic railroad station located at 1402 Liberty Street in Racine, Wisconsin.  The station was built in 1901 for the Chicago & Northwestern Railway.  Architects Frost & Granger designed the Georgian Revival station.  The depot, located on the southbound platform, included a waiting room, restrooms, a baggage room, and a ticket office.  The waiting room's decorations included oak benches, wood paneling, and a terrazzo floor.  A tunnel connected the depot to the westbound platform.

Salford Priors railway station: Salford Priors railway station was a railway station located in the village of Salford Priors, Warwickshire, England.  Opened on 16 June 1866 (17 September for passengers) as part of the Evesham & Redditch Railway, it had only one platform but a brick built waiting room/ticket office and station master's house.  It closed on 17 September 1963, although the last train ran on 1 October 1962, after which the train service was suspended due to the poor condition of the track.  A bus service replaced it while the statutory closure process was gone through.

Humber Ferry: The Humber Ferry was a ferry service on the Humber between Kingston upon Hull and New Holland in Lincolnshire which operated until the completion of the Humber Bridge in 1981.

Salmo station: The Salmo station (located in Salmo, British Columbia, Canada) was built by the Great Northern Railway (U.S.) that later become the Burlington Northern Railroad along the Nelson and Fort Sheppard Railway, a branch line extending north into Canada.  The 1-story, wood-frame, railway station was completed in 1913 and consists of a waiting room, ticket office and the freight and baggage room.  The station was built as part of a move by the Northern Railway to gain customers from the dominant railway in the region, the Canadian Pacific Railway.

Supporting paragraphs: Hull Victoria Pier railway station Humber Ferry
Answer: 1981