Question: What was the population of the terminus of the Willunga railway line in 2011

full_context: Document 1: Port Noarlunga, South Australia: Port Noarlunga is a suburb in the City of Onkaparinga, South Australia. It is a small sea-side suburb, population 2,632, about 30 km to the south of the Adelaide city centre and was originally created as a sea port. This area is now popular as a holiday destination or for permanent residents wishing to commute to Adelaide or work locally. There is a jetty that connects to a 1.6 km long natural reef that is exposed at low tide. The beach is large and very long and has reasonable surfing in the South Port area whose name is taken from its location - 'South of the Port'.
Document 2: Melbourne–Adelaide railway: The Melbourne–Adelaide railway is a standard gauge railway corridor that runs between the cities of Melbourne, Victoria and Adelaide, South Australia. Most of the current traffic is freight, though the only named and perhaps best known regular train is the twice-weekly passenger service "The Overland", operated by Great Southern Railways
Document 3: Outer Harbor railway line: The Outer Harbor railway line is a suburban branch line in Adelaide, South Australia. It runs from Adelaide station through the north western suburbs to Port Adelaide and Outer Harbor. It is 21.9 kilometres in length, and shares part of its run with the Grange line. It is operated by Adelaide Metro.
Document 4: City of Onkaparinga: The City of Onkaparinga is a local government area (LGA) located on the southern fringe of Adelaide, South Australia. It is named after the Onkaparinga River, whose name comes from "Ngangkiparinga", a Kaurna word meaning women's river. It is the largest LGA in South Australia, with an estimated population of 164,800 people in both urban and rural communities and is also geographically expansive, encompassing an area of 518.3 km². The council is headquartered in the Noarlunga Centre with area offices situated in Aberfoyle Park, Woodcroft and Willunga.
Document 5: Taringa railway station, South Australia: Taringa railway station was a ground level stopping place during the passenger transport days of the Willunga railway line which opened in 1915, and a 1965 reference mentioned that it was no longer used at that date.
Document 6: Glenunga, South Australia: Glenunga is a small southern suburb of 2,539 people in the South Australian city of Adelaide. It is located five kilometres southeast of the Adelaide city centre. The name Glenunga is taken from an Aboriginal language "unga" meaning near and "glen" because of its proximity to Glen Osmond (see Manning's places of South Australia by Geoffrey H. Manning published in 1990). Bounded on the north by Windsor Road, the east by Portrush Road, the south-west by Glen Osmond Road and the west by Conyngham Street, the leafy suburb forms a rough triangular layout. It is close by to other Burnside council suburbs of Toorak Gardens and Glenside.
Document 7: South Australian Railways East-West Stock: This article outlines the history of the 24 Corten steel vehicles with corrugated sides, constructed by the South Australian Railways and primarily used on the East-West Express from Adelaide to Port Pirie. The South Australian Railways broad gauge system had been extended north in 1937 to meet a southern extension from Port Augusta on the Commonwealth Railways' standard gauge system, creating Port Pirie as a break-of-gauge and transshipment point. To encourage passengers to use the line despite the inconvenience of changing trains, in 1947 the Cafeteria Car was constructed and used on the services to and from Adelaide, in conjunction with the mid-1930s Steel carriage fleet. In 1964 the first airconditioned sitting cars entered regular service on the East-West Express, and construction of those continued through to 1967 with a total of nine sitting cars and fourteen vans.
Document 8: Coast to Vines Rail Trail: The Coast to Vines rail trail open to pedestrians and cyclists, runs for 34 km through the southern suburbs of Adelaide from Marino to Willunga. Much of the trail has been constructed on the disused Willunga railway line.
Document 9: Willunga railway station: Willunga is a closed railway station in Adelaide, South Australia. It was the terminus of the Willunga railway line.
Document 10: Willunga, South Australia: Willunga is a town south of Adelaide, South Australia in the City of Onkaparinga local government area 47 km from the Adelaide CBD. Sometimes considered a part of the Adelaide metropolitan area, it is located within the famous McLaren Vale wine growing region. At the 2011 census , Willunga had a population of 2,416.
Document 11: Morphett Vale, South Australia: Morphett Vale is a southern suburb of Adelaide, South Australia in the City of Onkaparinga. It is the largest suburb in the state, with a population of more than 23,000 and an area of 12.76 km², followed by Paralowie with nearly 10,000 fewer residents. There are approximately 1,000 businesses in Morphett Vale.
Document 12: Willunga railway line: The Willunga railway line ran through the southern Adelaide suburbs from Adelaide railway station to Willunga, over 45 km long (longer than the current Gawler line, 42.2 km ). The line was opened in Willunga by the Governor of South Australia Sir Henry Galway on 20 January 1915, and initially had 16 stopping places between Adelaide and Willunga. It closed beyond Hallett Cove in 1969 and was dismantled in 1972. The Seaford railway line continues from Hallett Cove along a different alignment before rejoining the route of the old line between Seaford Road and Griffiths Drive.
Document 13: Reynella railway station: Reynella railway station was a railway station in Reynella, South Australia that was part of the Willunga railway line.
Document 14: City of Onkaparinga: The City of Onkaparinga is a local government area (LGA) located on the southern fringe of Adelaide, South Australia. It is named after the Onkaparinga River, whose name comes from "Ngangkiparinga", a Kaurna word meaning women's river. It is the largest LGA in South Australia, with an estimated population of 164,800 people in both urban and rural communities and is also geographically expansive, encompassing an area of 518.3 km². The council is headquartered in the Noarlunga Centre with area offices situated in Aberfoyle Park, Woodcroft and Willunga.
Document 15: Tonsley railway line: The Tonsley railway line is a suburban commuter line in Adelaide, South Australia that stems off the Seaford line at Mitchell Park to end opposite Science Park and close to the Flinders University and the Flinders Medical Centre. The line is single track for most of its length, from Celtic Avenue near Mitchell Park station to the terminus at Tonsley, with two intermediate stations. Services operate every 30 minutes on weekdays with no trains operating at night or on the weekend.
ground_truth: 2,416