Question: How many liters of beer did the company, that now makes a beer that became well-known among American GIs during the war in Vietnam in the 1960s and 1970s, produce in 2011?
Sentence (from "Wang Zhenhe"): Wang Zhenhe (Wang Chen-ho, 王禎和) (1 October 1940 – 3 September 1990) is one of Taiwan's most famous writers.
Relevant evidence: No