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
11	2010	Belgium (Wallonia Region)	49.245	359	8.442	7.456	4,03	3,35	421		JeanFrancois.Duckertsatpw.wallonie.be
9	2009	Belgium (Wallonia Region)	50.034	354	8.207	7.313	4,01	3,35	422		jeanfrancois.duckertsatspw.wallonie.be
8	2008	Belgium (Wallonia Region)	53.662	360	8.238	7.272	3,98	3,36	430		jeanfrancois.duckertsatspw.wallonie.be
7	2007	Belgium (Wallonia Region)	53.092	351	8.120	7.406	3,99	3,35	419		jf.duckerts@mrw.wallonie.be
6	2006	Belgium (Wallonia Region)	48.361	349	8.111	7.664	4,06	3,34	417		jf.duckerts@mrw.wallonie.be
5	2005	Belgium (Wallonia Region)	51.492	345	8.079	7.714	4,04	3,34	414		jf.duckerts@mrw.wallonie.be
4	2004	Belgium (Wallonia Region)	53.446	344	7.891	7.536	4,05	3,34	413		jf.duckerts@mrw.wallonie.be
3	2003	Belgium (Wallonia Region)	51.774	342	7.824	7.470	4,08	3,33	411		jf.duckerts@mrw.wallonie.be
2	2002	Belgium (Wallonia Region)	53.476	351	7.944	7.439	4,08	3,34	412		jf.duckerts@mrw.wallonie.be
1	2001	Belgium (Wallonia Region)	52.010	339	7.518	7.226	4,08	3,33	408		jf.duckerts@mrw.wallonie.be