Date
- 1983-04-01T08:00:00Z1
- 1983-10-01T07:00:00Z1
- 1984-04-01T08:00:00Z1
- 1984-10-01T07:00:00Z1
- 1985-04-01T08:00:00Z1
- 1985-10-01T07:00:00Z1
- 1986-04-01T08:00:00Z1
- 1986-10-01T07:00:00Z1
- 1987-04-01T08:00:00Z1
- 1987-10-01T07:00:00Z1
- 1988-04-01T08:00:00Z1
- 1988-10-01T07:00:00Z1
- 2007-10-01T07:00:00Z1
- 2008-04-01T07:00:00Z1
- 2008-10-01T07:00:00Z1
- 2009-10-01T07:00:00Z1
- 2010-10-01T07:00:00Z1
- 2011-10-01T07:00:00Z1
- 2012-10-01T07:00:00Z1
- 2013-10-01T07:00:00Z1