Table 6 Children 0-17 years, by number of siblings and parents living at home and the parents' cohabitation arrangements. 2001, 2005-2011. Per cent

6 Children¹ 0-17 years, by number of siblings² and parents³ living at home and the parents' cohabitation arrangements. 2001, 2005-2011. Per cent
Number of parents living at home and the parents' cohabitation arrangenments	Children, total	Children with no siblings	Children with siblings

	Children, total	Children with no siblings	Total	1 sibling	2 siblings	3 siblings	4 siblings	5 siblings or more

2001⁴	1 049 842	17.3	82.7	43.5	28.8	7.6	1.8	1.0
2005	1 078 081	17.6	82.4	43.6	28.5	7.5	1.8	1.0
2006	1 082 684	17.7	82.3	43.8	28.3	7.4	1.8	1.0
2007	1 085 765	17.9	82.1	44.0	28.0	7.3	1.7	1.0
2008	1 088 716	18.2	81.8	44.2	27.8	7.1	1.7	1.0
2009	1 092 727	18.4	81.6	44.3	27.5	7.0	1.7	1.0
2010	1 097 774	18.6	81.4	44.4	27.3	6.9	1.7	1.0
2011	1 102 000	18.9	81.1	44.6	27.1	6.8	1.7	1.0

2011
Living with both parents	822 808	13.7	86.3	46.7	29.7	7.1	1.7	1.0
Married	619 814	10.5	89.5	45.2	32.7	8.3	2.1	1.3
Cohabiting	202 994	23.7	76.3	51.5	20.4	3.6	0.6	0.2
Living with one of the parents	279 191	34.1	65.9	38.2	19.3	5.9	1.6	0.8
Mother	232 950	31.9	68.1	39.7	20.0	6.0	1.6	0.8
Only mother	160 252	37.3	62.7	39.8	16.3	4.4	1.3	0.8
Mother and step-parent	72 698	19.9	80.1	39.5	28.0	9.7	2.2	0.7
Father	46 241	45.5	54.5	30.7	16.0	5.5	1.6	0.8
Only father	32 271	56.8	43.2	29.9	10.4	2.1	0.6	0.2
Father and step-parent	13 970	19.3	80.7	32.3	28.9	13.3	4.1	2.0

¹	A child is defined as any person with no partner and no child who has de jure place of usual residence in the dwelling/private household of at least one of the parents. A child is either biological or adopted. A foster child is not considered a child.
²	Siblings living at home comprises biological-, half-siblings and stepbrothers and -sisters. Biological siblings are offsprings having both parents in common. Half-siblings are offsprings having only one parent in common. Stepbrothers and -sisters are offsprings having no parents in common, but one of their parents are living together as married or cohabiting couples. Persons living in the same private household as their parents are regarded as living at home. A person does not have to be considered a child in the houshold to be regarded as a sibling.
³	Biological parents and adoptive parents.
⁴	Population and Housing Census 3 November 2001.