| Year | Date |
|---|---|
| 1932 | 24 June 1932 |
| 1933 | 1 April 1933 |
| 1947 | 8 November 1947 |
| 1948 | 6 April 1948 |
| 1951 | 29 November 1951 |
| 1958 | 20 October 1958 |
| 1971 | 17 November 1971 |
| 1976 | 6 October 1976 |
| 1977 | 20 October 1977 |
| 1991 | 23 February 1991 |
| 2006 | 19 September 2006 |
| 2014 | 22 May 2014 |
