NBA averages record 18,322 per game as
attendance up 1.4%
Other records set this season included 872 sellouts, 71% of games selling out...arenas were filled to 98% capacity, another record.
Part of the reason for the attendance boost was the success of the in-season tournament, [Oh my God, the fans even bought that.] which was held this season for the first time in November and December. The NBA's average attendance for those November games around the league was 18,208, another record.
Ten teams -- Boston, Cleveland, Dallas, Denver, Golden State, Miami, Minnesota, Philadelphia, Phoenix and Sacramento -- sold out every game. Fans from more than 150 countries and territories purchased tickets to games, the league said.
*"...a phrase closely associated with P. T. Barnum, an American showman of the mid-19th century, although there is no evidence that he actually said it." (Wiki)