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
5	2005	Belgium (Flemish Region)	308 883	8 862	35					katrien.nijs@ewbl.vlaanderen.be
4	2004	Belgium (Flemish Region)	31 9743	9 197	34					katrien.nijs@ewbl.vlaanderen.be
3	2003	Belgium (Flemish Region)	32 8630	9 560	34					katrien.nijs@ewbl.vlaanderen.be
2	2002	Belgium (Flemish Region)	31 9074	9 874	32					katrien.nijs@ewbl.vlaanderen.be
1	2001	Belgium (Flemish Region)	32 9728	10 353	32	5 815	4.33			katrien.nijs@ewbl.vlaanderen.be