When the show premiered in 2005, Hayley was 18. They should have gone back to 1987. Going back to 1996 would have made Hayley 9 in 2005. This is just like Meet the Quagmires when Peter and Brian should have gone back to the 1970s instead of the 80s. Peter and Lois were teens in the 70s and putting them in the 80s would have messed things up. I'm just saying that it would have made more sense if the writers had gotten the timelines right.