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	2.538.825	321	8.365	8.241	4,12	3,44	408		folkert.onken@adt.de
9	2009	Germany	2.555.854	320	8.255	8.129	4,11	3,43	408		folkert.onken@adt.de
8	2008	Germany	2.529.502	321	8.154	8.056	4,12	3,44	402		folkert.onken@adt.de
7	2007	Germany	2.469.293	321	8.138	8.053	4,12	3,44	406		folkert.onken@adt.de
6	2006	Germany	2.440.410	319	8.033	7.938	4,13	3,43	404		folkert.onken@adt.de
5	2005	Germany	2.494.923	319	7.915	7.746	4,14	3,45	406		klaus.dittng@adt.de
4	2004	Germany	2.502.136	320	7.677	7.618	4,12	3,42	399
3	2003	Germany	2.478.380	320	7.642	7.523	4,11	3,41	399
2	2002	Germany	2.495.625	319	7.528	7.495	4,15	3,41	396
1	2001	Germany	2.544.299	310	7.431	7.342	4,15	3,41	396