Short of going game by game through box scores I'm not sure there's a database that would help you out where you could just search by EN goals for games in the 80's.
In general though...I'm not sure what it would really do. I don't think Gretzky was always "pass-first". Gretzky's greatest attributes, to my mind, were his situational awareness and intelligence. If it was better for him to shoot, he shot and if it was better for him to pass, he passed.