Question: The Volkswagen Golf Estate is the estate/station wagon version a the compact car which was the best selling car in Europe in what year?

Context paragraphs:
Volkswagen Golf Mk5: The Volkswagen Golf Mk5 (codenamed "Typ 1K") is a compact car, the fifth generation of the Volkswagen Golf and the successor to the Volkswagen Golf Mk4.  Built on the Volkswagen Group A5 (PQ35) platform, it was unveiled at the Frankfurt Motor Show in October 2003 and went on sale in Europe one month later.  A compact MPV version of the car was produced as the Golf Plus.

Volkswagen Golf Mk7: The Volkswagen Golf Mk7 (also known as the Golf VII) is a compact car, the seventh generation of the Volkswagen Golf and the successor to the Volkswagen Golf Mk6.  It was announced in Berlin on 4 September 2012, before a public launch at the 2012 Paris Auto Show.  Cars reached Volkswagen dealers in the Golf's European domestic market on 10 November 2012.

Izh 2125: The IZh 2125 "Kombi" (Russian: ИЖ-2125 Комби, short for "combination") is a compact car produced by the Soviet car manufacturer IZh from 1973 to 1997.  It was based on an Izhevsk-modified Moskvitch 412, with the first prototype released in 1972 as a small family car.  It was considered to be the first Soviet hatchback (released about a decade before the well-known Lada Samara), though the car actually possesses a station wagon body wherein the "D" pillar has its own support and does not gain from weight reduction (which would position the model more in the liftback family).  In Russian literature the car is referred to as liftback.  For the same reason, the car was given the "Kombi" nickname, which in a way alludes to the Combi coupé (the word "kombi" itself meaning "station wagon" in German and Polish, while in Russian a station wagon is called "universal").

Volkswagen Golf Mk2: The Volkswagen Golf Mk2 is a compact car, the second generation of the Volkswagen Golf and the successor to the Volkswagen Golf Mk1.  It was Volkswagen's volume seller from 1983 and remained in (German) production until late 1992.  The Mk2 was larger than the Mk1; its wheelbase grew slightly (+ 75 mm ), as did exterior dimensions (length + 180 mm , width + 55 mm , height + 5 mm ).  Weight was up accordingly by about 120 kg .  Exterior design, developed in-house by VW design director Schäfer, kept the general lines of its Giugiaro-designed predecessor, but was slightly more rounded.  All told, about 6.3 million second-generation Golfs were built.

Chevrolet Lakewood: The Chevrolet Lakewood is a 4 door station wagon produced by Chevrolet in the 1961 and 1962 model years.  It was the station wagon version of the Corvair and therefore the entry level station wagon series.  In size, appearance, and technical respects it resembled the Volkswagen Type 3 Squareback, and power came from the Corvair's rear engine with 146 cu.in.  displacement which developed 80 bhp @ 4,400 rpm.  Like the Corvair it had a 108 in.  wheelbase and was equipped with a 3 speed manually shifted gearbox.

Volkswagen Golf Mk6: The Volkswagen Golf Mk6 (or VW "Typ 5K") is a compact car, the sixth generation of the Volkswagen Golf and the successor to the Volkswagen Golf Mk5.  It was unveiled at the Paris Auto Show in October 2008.  Volkswagen released pictures and information on 6 August 2008, prior to the official unveiling.  The vehicle was released to the European market in the winter of 2008.  Major investments have been made in production efficiency, with a claimed productivity improvement at launch of nearly 20% in comparison with the previous model, and further gains planned for the next twelve months.

Audi RS 2 Avant: The Audi RS2 Avant, usually known as Audi 80 RS2, was a limited edition, high-performance Audi five-door, five-seat estate car (station wagon), manufactured from March 1994 to July 1995.  Collaboratively designed as a joint venture between Audi AG and Porsche and built on Audi's 80 Avant, designated internally as P1 (instead of B4/8C that it was based on).  It was Audi's first "RS" vehicle, and the first of their high-performance Avants (Audi's name for an estate car or station wagon); it used the most powerful and most thoroughly developed version of Audi's inline-five cylinder turbocharged internal combustion engine.

Volkswagen Golf Mk3: The Volkswagen Golf Mk3 is a small family car, the third generation of the Volkswagen Golf and the successor to the Volkswagen Golf Mk2.  It was launched in mainland Europe in August 1991, in the United Kingdom in February 1992, and in North America in the spring of 1994.  The delay in North America was due to Volkswagen's decision to supply U.S. and Canadian dealerships with Mk3 Golfs (and A3 Jettas) from the VW plant in Puebla, Mexico.  Quality control problems led Volkswagen of America to reject Golfs and Jettas from Mexico; shortly thereafter labor unrest at the plant delayed production there even further.  The third-generation Golf and Jetta first appeared in North America as 1993 models in the San Diego, California area and in Canada, then in the autumn in the rest of North America as 1994 models.  The Mk3 Cabrio replaced the Volkswagen Cabriolet, which continued the original Golf until 1993, although the original Golf, sold as Rabbit in the United States and Canada ceased sales in 1984.  The Mk3 Cabrio continued until the 2002 model year, when Volkswagen replaced it with a convertible version of the Volkswagen New Beetle.  The Mk3 was sold in Japan alongside the Polo, where both vehicles were in compliance with Japanese Government dimension regulations that encouraged sales.  A 1993 UK advert featured the Bluebells song Young At Heart which resulted in a 4-week spell at Number 1 thanks to the popularity of it.

Volkswagen Golf Estate: The Volkswagen Golf Estate, also known as the Volkswagen Golf Sportswagen in the United States, and the Volkswagen Golf Variant in other countries, is the estate/station wagon version of the Volkswagen Golf Mk3, Mk4, Mk5 and Mk6, first introduced in 1993.

Volkswagen Golf Mk4: The Volkswagen Golf Mk4 (or VW "Typ 1J") is a compact car, the fourth generation of the Volkswagen Golf and the successor to the Volkswagen Golf Mk3.  Launched in October 1997, it was the best selling car in Europe in 2001 (though it slipped to second place, behind the Peugeot 206, in 2002).

Supporting paragraphs: Volkswagen Golf Estate Volkswagen Golf Mk4
Answer: 2001