Question: How much in ticket revenue in 2013 did the busiest Amtrak route that uses the Wallingford station earn?
Sentence (from "Northeast Regional"): It is the busiest Amtrak route, carrying 8.04 million passengers in fiscal year (FY) 2013, a 0.4% increase over the 8.01 million passengers in FY2012.
Relevant evidence: Yes