The average field is about 130 players, all of whom are housed in private homes, and attendance can climb to as much as 10,000.
If the Mets fielded a winning team, attendance would climb regardless of the competition.
But as the Yankees continued to win world championships and attendance climbed over 3 million, the bleachers began to evolve.
Since then, with the arrival of the Liberty Science Center and other attractions, attendance has climbed steadily.
As the 1970s progressed, the attendance at the Chelsea Show climbed, by as much as 6,000 visitors in a single year (1978).
Since bottoming out in 2004, total attendance has climbed about 10 percent total over the last few years, according to a report in July 2008.
Despite the obstacles, overall attendance and advertising revenue are climbing, and the league now brings in about $30 million a year.
As attendance has climbed, the park has taken on qualities of its own.
As the private companies took over, attendance climbed.
Average daily attendance climbed from 121 to 384 students.