| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2021 | 08 Jun 2021 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jun 2021 | 02 Jun 2021 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jul 2020 | 09 Jul 2020 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jun 2019 | 21 Jun 2019 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jul 2018 | 09 Jul 2018 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2017 | 07 Dec 2017 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jul 2017 | 05 Jul 2017 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jun 2016 | 07 Jun 2016 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 May 2016 | 30 May 2016 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jul 2015 | 07 Jul 2015 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jun 2015 | 30 May 2015 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Jun 2014 | 25 Jun 2014 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 May 2014 | 30 May 2014 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jun 2013 | 24 Jun 2013 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 May 2013 | 30 May 2013 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2013 | 22 May 2013 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jun 2012 | 26 Jun 2012 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 May 2012 | 30 May 2012 | 001-08491 |