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
12	2010	Belgium (Wallonia Region)	214 695	4 819	44.6					JeanFrancois.Duckertsatpw.wallonie.be
11	2009	Belgium (Wallonia Region)	218 619 (05/2009)	4 922 (05/2009)	44.4 (05/2009)	6 081	4.02	3.30		JeanFrancois.Duckertsatpw.wallonie.be
10	2008	Belgium (Wallonia Region)	217 716 (05/2008)	5 150 (05/2008)	42.3 (05/2008)	5 902	4.00	3.33		jeanfrancois.duckertsatspw.wallonie.be
9	2007	Belgium (Wallonia Region)	219 218 (05/2007)	5 385 (05/2007)	40.7 (05/2007)	5 920	3.96	3.33		JeanFrancois.Duckertsatpw.wallonie.be
8	2006	Belgium (Wallonia Region)	223 538 (15/05/2006)	5 794 (15/05/2006)	38.6 (15/05/2006)	5 678	4.00	3.31		jf.duckerts@mrw.wallonie.be
7	2005	Belgium (Wallonia Region)	230 374 (15/05/2005)	6 141 (15/05/2005)	37.5 (15/05/2005)	5 789	4.00	3.30		jf.duckerts@mrw.wallonie.be
5	2004	Belgium (Wallonia Region)	239 095 (15/05/2004)	6 450 (15/05/2004)	37.1 (15/05/2004)	5 559	4.01	3.31		jf.duckerts@mrw.wallonie.be
4	2003	Belgium (Wallonia Region)	247 425 (15/05/2003)	6 804 (15/05/2003)	36.4 (15/05/2003)	5 334	3.99	3.29		jf.duckerts@mrw.wallonie.be
3	2002	Belgium (Wallonia Region)	257 559 (15/05/2002)	7 095 (15/05/2002)	36.3 (15/05/2002)	5 281	3.99	3.29		jf.duckerts@mrw.wallonie.be
2	2001	Belgium (Wallonia Region)	266 421 (15/05/2001)	7 401 (15/05/2001)	36.0 (15/05/2001)	4 948	3.98	3.29		jf.duckerts@mrw.wallonie.be