How to see average game length for specific chess opening (number of moves)? How to see average game lenght for specific chess opening?

Is there some chess database which allow me to see specific opening game length?

For example:


Sicilian defense (average length is: 80.5)
Caro-Kann defense (average length is: 60.7)


I want to learn which opening lead to short, medium, long game.

It is easy to find white/black/draw statistics but hard to find length of games.
Chessbase has a function "Opening Report" which gives average lenght of White wins/Black wins/draws
Just setup che base position on the chessboard and right-click it