The 12-team league will grow to 13 next year with the addition of Toronto ; to 14 in 2008 with a team in St. Louis , Milwaukee or Cleveland ; possibly to 15 in 2009 if Rowan University in Glassboro , N.J. , is able to find financing for a $ 1 billion development project ; and to 16 in 2010 with the addition of a team in New York City .