_id	Reference period	Reference date	Reference year	Household type	90-10 shares ratio, pre-benefit income	90-10 shares ratio, gross income	90-10 shares ratio, net income before housing costs	90-10 shares ratio, net income after housing costs
1	2009/2010	2009-12-31T00:00:00	2009	All households	26	11	9	12
2	2014/2015	2014-12-31T00:00:00	2014	All households	25	11	9	19
3	2021/2022	2022-03-31T00:00:00	2022	All households	27	12	10	21