_id	Reference period	Reference date	Reference year	Household type	90-10 ratio, pre-benefit income	90-10 ratio, gross income	90-10 ratio, net income before housing costs	90-10 ratio, net income after housing costs
1	2009/2010	2009-12-31T00:00:00	2009	All households	7	4.8	3.9	4.8
2	2014/2015	2014-12-31T00:00:00	2014	All households	7.6	5.4	4.2	6
3	2021/2022	2022-03-31T00:00:00	2022	All households	7.1	5	4.1	6.6