Key	Year	Country	Number of lactations	Length of the lactations (days)	Milk yield per recorded cow (kg)	Milk per cow in 305 days (kg)	Percent fat content (%)	Percent protein content (%)	Calving interval (days)	Others	E-mail address of the responsible
13	2009	Luxembourg	33.968		7.451		4.17	3.40	422		armand.braun@convis.lu
12	2008	Luxembourg	33.215		7.353		4.22	3.41	425		armand.braun@convis.lu
11	2007	Luxembourg	32.445		7.505		4.17	3.42	419		armand.braun@convis.lu
10	2006	Luxembourg	33.339		7.473		4.22	3.43	416		armand.braun@convis.lu
9	2005	Luxembourg	19.581		7.665		4.17	3.42	413		armand.braun@convis.lu
7	2004	Luxembourg	19.655		7.579		4.24	3.43	399		armand.braun@herdbooks.lu
6	2003	Luxembourg	19.851		7.491		4.23	3.40	398		armand.braun@herdbooks.lu
5	2002	Luxembourg	20.532		7.275		4.23	3.40	397		armand.braun@herdbooks.lu
4	2001	Luxembourg	20.681		7.021		4.23	3.39	396		armand.braun@herdbooks.lu