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	2009	Denmark	516441	365	9022		4,29	3,44		365 days rolling average	UFL@landscentret.dk
8	2008	Denmark	507000	365	8922		4,26	3,41		365 days rolling average	UFL@landscentret.dk
7	2007	Denmark	496770	365	8919		4,24	3,43		365 d. rolling average	ufl@landscentret.dk
6	2006	Denmark	506084	365	8778		4,31	3,43		365 d. rolling average	ufl@landscentret.dk
5	2005	Denmark	508235	365	8660		4,31	3,45		365 d. rolling average	ufl@landscentret.dk
4	2004	Denmark	521781	365	8442		4,31	3,46		365 d. rolling average	ufl@landscentret.dk
3	2003	Denmark	545504	365	8224		4,32	3,47		365 d. rolling average	ufl@landscentret.dk
2	2002	Denmark	548025	365	7946		4,29	3,45		365 d. rolling average	ufl@landscentret.dk
1	2001	Denmark	559383	365	7792		4,32	3,45		365 d. rolling average	ufl@landscentret.dk