Percentage of Under-21 players in top division, 2004-2012.

Season 2012/13:
10,64% Germany
9,03% Italy
8,92% France
6,94% Spain
5,71% England

Highest percentage 2004-12:
14,71% France 2005/06
12,96% Germany 2010/11
11,38% England 2007/08
10,73% Spain 2007/08
9,03% Italy 2012/13

Lowest percentage:
8,92% France 2012/13
6,94% Spain 2012/13
4,78% England 2010/11
4,05% Italy 2011/12
3,86% Germany 2006/07