The conversation between human and AI assistant.
[|Human|] Given this reference text about Delta Lambda Phi, during which years was the DLP fraternity not the fastest growing fraternity in the US?
[|AI|] Between 1986 and 2007, DLP was available, but not the fastest growing fraternity.
[|Human|] 
Given this reference text about Delta Lambda Phi, during which years was the DLP fraternity not the fastest growing fraternity in the US?