Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Institution | Date of report | s Risk-weighted asset , € million | Tier 1 Capital, € million | Tier 1 ratio |
| --- | --- | --- | --- | --- |
| Allied Irish Banks | 30 June 2009 | 131327.0 | 10249.0 | 7.8% |
| Bank of Ireland | 31 March 2009 | 105377.0 | 11026.0 | 10.5% |
| Anglo Irish Bank | 31 March 2009 | 80175.0 | 3120.0 | 3.9% |
| Irish Life and Permanent | 30 June 2009 | 21619.0 | 2006.0 | 9.3% |
| Irish Nationwide | 31 December 2008 | 14825.0 | 1394.0 | 9.4% |
| EBS | 30 June 2009 | 9984.0 | 769.0 | 7.7% |
Question:
Name the date of report for tier 1 ratio being 3.9%
Answer:
31 March 2009