The CSO have published the headline figures for the 2011 SILC as well as revised figures for the 2010 SILC which can be found in the release.
There will be some interest in the revision of the 2010 figures but as the data by income decile will be published at a later date we are still unsure of the specific impact the revisions will have on this graph. The reason for the revision is given as:
In 2010 changes had been made to the processing of the data which resulted in an incorrect treatment in some cases of tax, income and pension contributions. This became clear when unusual trends in certain categories between 2010 and 2011 were further analysed.
On income inequality the revisions of the overall figures for 2010 include:
- Gini Coefficient: from 33.9 to 31.6
- Quintile Share: from 5.5 to 4.9
- At-risk-of-poverty rate: from 15.8% to 14.7%
These are all significant changes. The reported figures for 2011 indicate a drop in the Gino coefficient to 31.1 but a rise in the at-risk-of-poverty rate to 16.0%.