Question: The Cirrus SR22 aircraft was built by a company founded in what year?

Context paragraphs:
Avidyne Entegra: Avidyne Entegra is an integrated aircraft instrumentation system, produced by Avidyne Corporation, consisting of a primary flight display (PFD), and multi-function display (MFD).  Cirrus became the first customer of the Entegra system and began offering it on the SR20 and SR22 aircraft in 2003 as the first integrated flight deck for light general aviation (GA).  The original Entegra system was designed to use third-party components such as a GPS from Garmin and an autopilot system from S-TEC Corporation.

Cirrus Aircraft: The Cirrus Aircraft Corporation (formally Cirrus Design Corporation) is an aircraft manufacturer that was founded in 1984 by Alan and Dale Klapmeier to produce the VK-30 kit aircraft.  The company headquarters is located in Duluth, Minnesota, United States.  As of June 2015, Cirrus had delivered over 6,000 aircraft in 16 years of production, and has been the world's largest producer of piston-powered aircraft since 2013.

Cirrus Airframe Parachute System: The Cirrus Airframe Parachute System (CAPS) is a whole-plane ballistic parachute recovery system designed specifically for Cirrus Aircraft's line of general aviation light aircraft including the SR20, SR22 and SF50.  The design became the first of its kind to become certified with the FAA, achieving certification in October 1998, and remains the only aircraft ballistic parachute used as standard equipment by an aviation company.

Blackburn Cirrus Bombardier: The Blackburn Cirrus Bombardier was a British four-cylinder inline aircraft engine, developed and built by the Blackburn Aircraft company in the mid-1950s.  The engine featured fuel injection.

Ampyx Power: Ampyx Power is an airborne wind energy company founded in 2008 by Bas Lansdorp and Richard Ruiterkamp.  It was created after Lansdorp dropped his five-year-long studies of wind energy at Delft University of Technology to found Ampyx Power.  In 2011, Lansdorp sold a majority of his Ampyx Power shares to fund his new project, Mars One.  Wubbo Ockels' interest in energy began when he let a kite line slip and it burned his hand.  He became interested and started to study and research how this could be turned into electricity.  At Delft University, he formed a team with Bas Lansdorp that worked on developing kites that could retrieve energy from the sky.  Richard Ruiterkamp became the team leader and he created a fixed wing aircraft that allowed greater controllability and allowing the generation of more energy.  In 2008 he founded the company with Bas Lansdorp.  Lansdorp worked on the business aspect, and Ruiterkamp was head of the science division.  Currently, Ampyx Power has a team of 40 engineers.  Their current prototype is the AP3 Ampyx Power Airborne Wind Energy System (AWES).  The system is a tethered aircraft that converts wind into electric energy.  The aircraft is tethered to an on the ground generator.  When the aircraft moves and flies, it reels the tether and powers the generator.  The plane is then reeled in through the tether and then re-released into the air.

Cirrus SR22: The Cirrus SR22 is a single-engine four- or five-seat composite aircraft built from 2001 by Cirrus Aircraft of Duluth, Minnesota.

Folkerts SK-1: The Folkerts SK-1,Speed King One, Mono Special, Matilda, Fordon-Neumann Special, Hardwick-Whittenbeck Special was a racer built for the 1930 American Cirrus Aircraft Engine Company sponsored American Cirrus Derby.

Western Boat Building Co: Western Boat Building Co was a company based in Tacoma, Washington from 1916 till 1982.  The company was founded by Martin Petrich, Joe M. Martinac and William Vickart.  Within a few years, Joe Martinac left the partnership to go to the Tacoma Shipbuilding Company, and later started his own company.  William Vickart was killed in an accident in 1921, leaving Martin Petrich the sole owner.  In the early 1920s the company was located at the foot of Starr Street on part of the former Tacoma Mill Company property after that property was destroyed in a fire.  Later yards were located on East 11th Street, D Street, and Marine View Drive.  In 1937, the company built the Western Flyer as a purse seiner, and in 1940, this boat was the vehicle that carried John Steinbeck on the journey which he documented in The Log from the Sea of Cortez.  In 1949, the company launched the largest tuna clipper ever built till that time, the 150 foot Mary E. Petrich.  Towards the end of World War II, the company founded the Fairliner division which made fast speed boats.  Before the devastating yard fire of 1950, the company was the largest builder of wooden pleasure boats on the west coast.  The company continued to build boats till 1982.

HAL HT-2: The Hindustan HT-2 is an Indian two-seat primary trainer designed and built by Hindustan Aeronautics Limited.  The HT-2 was the first company design to enter production in 1953 for the Indian Air Force and Navy, where it replaced the de Havilland Tiger Moth.  The HT-2 is a low-wing cantilever monoplane with a fixed tailwheel landing gear.  Powered by a 155 hp (116 kW) Cirrus Major III piston engine the aircraft has enclosed tandem cockpits with dual controls.  Apart from military use the aircraft was also used by Indian flying schools.

Krossblade Aerospace Systems: Krossblade Aerospace Systems is an aviation company founded in 2014 in Phoenix, Arizona, USA.  The company is known for developing a 5-seat hybrid, vertical take-off and landing, VTOL concept, SkyCruiser, and for its drone/UAV prototype, SkyProwler.  Both aircraft employ the switchblade transformation mechanism to transform from a multirotor aircraft for vertical take-off and landing, to a pure winged aircraft, for rapid and efficient cruise.

Supporting paragraphs: Cirrus SR22 Cirrus Aircraft
Answer: 1984