Nationality of the main breadwinner	Coefficient of variation	Periodo	Total
Total	Variation coefficient	2015	0,8
Total	Variation coefficient	2014	0,8
Total	Variation coefficient	2013	0,8
Total	Variation coefficient	2012	0,8
Total	Variation coefficient	2011	0,8
Total	Variation coefficient	2010	0,8
Total	Variation coefficient	2009	0,8
Total	Variation coefficient	2008	0,8
Total	Variation coefficient	2007	0,8
Total	Variation coefficient	2006	0,9
Spanish 	Variation coefficient	2015	0,8
Spanish 	Variation coefficient	2014	0,8
Spanish 	Variation coefficient	2013	0,8
Spanish 	Variation coefficient	2012	0,9
Spanish 	Variation coefficient	2011	0,9
Spanish 	Variation coefficient	2010	0,9
Spanish 	Variation coefficient	2009	0,9
Spanish 	Variation coefficient	2008	0,9
Spanish 	Variation coefficient	2007	0,9
Spanish 	Variation coefficient	2006	1
Foreign national	Variation coefficient	2015	5
Foreign national	Variation coefficient	2014	5
Foreign national	Variation coefficient	2013	4,9
Foreign national	Variation coefficient	2012	4,9
Foreign national	Variation coefficient	2011	4,9
Foreign national	Variation coefficient	2010	4,8
Foreign national	Variation coefficient	2009	5,1
Foreign national	Variation coefficient	2008	4,7
Foreign national	Variation coefficient	2007	4,6
Foreign national	Variation coefficient	2006	5,8
Other case	Variation coefficient	2015	6,2
Other case	Variation coefficient	2014	6,3
Other case	Variation coefficient	2013	7
Other case	Variation coefficient	2012	6,7
Other case	Variation coefficient	2011	7,6
Other case	Variation coefficient	2010	8,1
Other case	Variation coefficient	2009	8,3
Other case	Variation coefficient	2008	9,9
Other case	Variation coefficient	2007	10
Other case	Variation coefficient	2006	12