Cumulative GPA distribution/percentiles?

Does anyone know how to find cumulative GPA distribution (preferably by year, major)? (e.g. percentage of students whose cumulative GPA is between 3.0 and 3.5 or something like that). The closest I could find is this, but it's only per-term letter grades. I'd like to find out how my overall GPA compares to others in my class or major.