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
28	2012	Germany	4.190.485	82.865	50,6	7.310	4,13	3,41	production estimated	folkert.onken@adt.de
27	2011	Germany	4.190.103	87.162	48,1	7.240	4,15	3,41		folkert.onken@adt.de
22	2010	Germany	4.181.679	91.550	45,7	7.085	4,16	3,42		folkert.onken@adt.de
21	2009	Germany	4.169.349	95.766	43,5	6.977	4,15	3,42		folkert.onken@adt.de
19	2008	Germany	4.229.138	99.431	42,3	6,827	4,14	3,39	Number of dairy cows out of the national database; modified method of counting	folkert.onken@adt.de
18	2007	Germany	4.087.300	99.000	41,3	6.944	4,16	3,43		folkert.onken@adt.de
17	2006	Germany	4.054.400	102.200	39,7	6.849	4,16	3,42		folkert.onken@adt.de
12	2005	Germany	4.163.600	110.400	38,4	6.761	4,17	3,42		klaus.ditting@adt.de
8	2004	Germany	4.286.600	111.800	38.2	6.585	4.22	3.43		klaus.ditting@adt.de
7	2003	Germany	4.337.600	121.500	36.0	6.537	4.19	3.43		klaus.ditting@adt.de
6	2002	Germany	4.373,4	128.900	33.9	6.272	4.20	3.42		klaus.ditting@adt.de
5	2001	Germany	4.474,9	131.800	34,3	6.213	4,23	3,42		klaus.ditting@adt.de