Church/denomination with highest young adult attendance? Which denominations (churches) have the highest attendance of young adults (say ~16 to ~32) as a percentage of the congregation?

If statistics aren't available, then in your experience, what are some churches with high young adult attendance?

Note: any insight from any country would help, but I'm mainly interested in the "next generation's" adoption of Christianity in the U.S. and Western Europe. This is for research.
By experience in my area (Ohio), it appears that non-denominational (Baptist with a little 'B' generally) contemporary services tend to draw in young adults.  I'd feel safer to say that if your age group is 18 to 32.  16 year old are still under control of their parents.  At 18 they can choose where to go and more parents do not object since at least they're attending some church.

Catholic churches also have a good crowd, but those are usually people who were raised Catholic and attending service is a tradition.  Unchurched people are more inclined to join a church as mentioned above.