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
10	2010	Germany	3.468.951	320	8.091	7.993	4,14	3,43	405		folkert.onken@adt.de
11	2009	Germany	3.505.979	319	7.989	7.883	4,13	3,43	405		folkert.onken@adt.de
8	2008	Germany	3.496.257	321	7.879	7.812	4,13	3,43	406		folkert.onken@adt.de
7	2007	Germany	3.422.769	320	7.867	7.803	4,13	3,42	405		folkert.onken@adt.de
6	2006	Germany	3.418.867	318	7.747	7.673	4,15	3,42	404		folkert.onken@adt.de
5	2005	Germany	3.527.915	318	7.636	7.492	4,16	3,44	406		klaus.ditting@adt.de
4	2004	Germany	3.581.821	319	7.407	7.317	4,13	3,41	398
3	2003	Germany	3.592.938	319	7.355	7.245	4,12	3,40	398
2	2002	Germany	3.594.394	318	7.231	7.174	4,16	3,40	396
1	2001	Germany	3.651.348	316	7.131	7.066	4,16	3,40	395