Key	Year	Country	Total number of dairy cows	Total number of dairy herds	Average of cows per herd	Average milk production per cow per year (kg)	Percent of fat production per cow per year (%)	Percent of protein production per cow per year (%)	Others	E-mail address of the responsible
21	2010	Norway	244700	11527	21	7125	4,24	3,38		per.skipenes@tine.no
20	2009	Norway	249080	12270	20,3	7057	4,22	3,37		per.skipenes@tine.no
18	2008	Norway	249000	12244	20	6921	4,19	3,39		per.skipenes@tine.no
17	2007	Norway	261800	13253	19	6757	4,21	3,38		per.skipenes@tine.no
14	2006	Norway	265380	14700	18	6586	4,16	3,35		per.sigve.lien@tine.no
7	2005	Norway	275150	16440	16,7	6541	4,20	3,33		per.sigve.lien@tine.no
8	2004	Norway	280090	16900	16,6	6469	4,17	3,30		tone.roalkvam@tine.no
4	2003	Norway	278100	17803	15,6	6314	4,16	3,27		tone.roalkvam@tine.no
2	2002	Norway	286000	18775	15,2	6190	4,14	3,27		tone.roalkvam@tine.no
1	2001	Norway	299000	20500	14,6	6078	4,17	3,27		tone.roalkvam@tine.no