Yes ATP of 1989 is 6 rs. But maine pyar kiya ATP is more than 6 rs. Due to long run.
Ex - 1. Hahk
Atp of hahk - 15.81 rs.
Atp of 1994 - 11.05 rs.
Ex - 2 Ddlj
Atp of Ddlj - 18.02 rs.
Atp of 1995 - 14.37 rs
And many more. And second thing is Mpk released 28 dec 1989 so max business coming in 1990 or 1991 years so ATP around 6.5 rs. According to me.