Here is a list of some of the IMDb's top-rated films, measured against the Bechdel Test. And here are some graphs.
So where are all the women? Well, probably the same place all the female screenwriters and directors are. In Hollywood, 19% of screenwriters are women. In television it's 28%.
And, far from getting easier, it's actually getting harder for women to get writing work in Hollywood. You can read more about that here.
As you'd expect, there's a connection between the number of women working as writers, directors and producers, and the number of female characters onscreen. More on that here.
From The Guardian: