Query: By how many attendees did the average Premier League attendance increase between 1992 and 2009?
Context: For the 2009–10 season, average attendances across the league clubs were 34,215 for Premier League matches with a total aggregate attendance figure of 13,001,616. This represents an increase of 13,089 from the average attendance of 21,126 recorded in the league's first season (1992–93). However, during the 1992–93 season the capacities of most stadiums were reduced as clubs replaced terraces with seats in order to meet the Taylor Report's 1994–95 deadline for all-seater stadiums.