| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2023 | 02 May 2023 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2022 | 03 May 2022 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 May 2021 | 04 May 2021 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 May 2020 | 05 May 2020 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2019 | 07 May 2019 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2018 | 07 May 2018 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2017 | 01 May 2017 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2016 | 01 Jun 2016 | 001-35198 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2016 | 02 May 2016 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jun 2015 | 04 Jun 2015 | 001-35198 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2015 | 11 May 2015 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jun 2014 | 04 Jun 2014 | 001-35198 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 May 2014 | 12 May 2014 | 001-07657 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2014 | 31 Dec 2013 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2014 | 10 Feb 2014 | 001-35198 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Nov 2013 | 26 Nov 2013 | 001-35198 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Nov 2013 | 06 Nov 2013 | 001-36164 |
| 3 | Open Document | Open Filing | FORM 3 | 06 Nov 2013 | 06 Nov 2013 | 001-36164 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jun 2013 | 05 Jun 2013 | 001-35198 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2013 | 29 Apr 2013 | 001-07657 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jun 2012 | 06 Jun 2012 | 001-35198 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2012 | 10 May 2012 | 001-07657 |