Question: In what year did Florentijn Hofman create the largest rubber duck sculpture?

Context articles: Rubber ducky antenna
Florentijn Hofman
Rubber Duck (album)
Rubber Duck Races
Rubber Duckie
'Round the World with the Rubber Duck
Rubber duck
Rubber duck (military)
Rubber duck debugging
Rubber Duck (sculpture)

The rubber ducky antenna (or rubber duck aerial) is an electrically short monopole antenna that functions somewhat like a base-loaded whip antenna.
 It consists of a springy wire in the shape of a narrow helix, sealed in a rubber or plastic jacket to protect the antenna.
 Rubber ducky antenna is a form of normal-mode helical antenna.
Florentijn Hofman (16 April 1977) is a Dutch artist.
 He is known for playful urban installations such as the Rubber Duck, and the 2014 installation in London UK, the HippopoThames.
Rubber Duck is an album by country musician C. W. McCall, released on Polydor Records in 1976 (see 1976 in music).
 It is his fourth album, released the same year as "Wilderness", but concentrating on the themes the McCall character was popular for – trucking, as opposed to the various depictions of nature that could be found in "Wilderness".
 Among others, the album contains the song "'Round the World with the Rubber Duck", a sequel to McCall's earlier wildly popular hit "Convoy", with many humorous and absurd elements added.
 "Audubon" is a quasi-autobiographical song, while "Ratchetjaw" is a take on trucker slang, with a multitude of CB-related terminology included in the lyrics.
A rubber duck race is a type of festival where thousands of rubber ducks race on a river, usually within the city.
 Normally they are fundraising events and the ducks are given numbers which enables the participants to "adopt" a rubber duck for a small amount of money.
 If the rubber duck wins or places well, the participants will win money or a prize of some sort.
"Rubber Duckie" is a song sung by the Muppet character Ernie (voiced by Jim Henson) on "Sesame Street".
 The song is named after Ernie's toy, a rubber duck affectionately named Rubber Duckie.
"' Round the World with the Rubber Duck" is the 1976 novelty song performed by C.W. McCall (pseudonym of Bill Fries) that was the sequel to the similar truck-driving country hit, Convoy. "
'Round the World with the Rubber Duck" continues the story about the fictitious truck convoy from the song Convoy.
 The truckers cross to Europe ("there ain't no way out 'cept for that one Atlantic Ocean") and travel through several countries including Great Britain, Germany, Russia, and Japan.
 At the end of the song there is also a reference to Australia ("Ah, ten-four, Pig Pen, what's your twenty?
 Australia?
 Mercy sakes, ain't nothin' down there but Tasmanian devils and them cue-walla bears.")
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 The lyrics consist of different types of interspersed dialog including simulated CB conversations with CB slang and the chorus sung with a pirate accent and self-mocking background vocals ("Dumb, Dumb, Dumb, This is,").
 The song's CB dialog includes parodied British, German, Russian, and Japanese accents, with stereotypical mispronounced words.
A rubber duck is a toy shaped like a stylized duck, generally yellow with a flat base.
 It may be made of rubber or rubber-like material such as vinyl plastic.
 The yellow rubber duck has achieved an iconic status in Western pop culture and is often symbolically linked to bathing.
 Various novelty variations of the toy are produced.
In the United States military, a rubber duck or "rubber ducky" or "Blue Gun" refers to a fake training weapon, usually an M16 rifle, used in basic training.
 Trainees are issued rubber ducks before they have been properly trained to use actual rifles, in order to become familiar with the care, responsible handling, and added weight of an M16 during various activities, such as bayonet drills, water survival and marches.
 They are also used to train soldiers in various ceremonial practices that differ when soldiers are armed.
 For example, standing at attention requires a different stance and set of movements when the soldier has a rifle in-hand.
In software engineering, rubber duck debugging or rubber ducking is a method of debugging code.
 The name is a reference to a story in the book "The Pragmatic Programmer" in which a programmer would carry around a rubber duck and debug their code by forcing themselves to explain it, line-by-line, to the duck.
 Many other terms exist for this technique, often involving different inanimate objects.
Rubber Duck refers to any of several giant floating sculptures designed by Dutch artist Florentijn Hofman.
 These were built in various sizes, ranging from the prototype, which measured 1 inch, to the one created in 2007 that is the largest rubber duck in the world.