Date
- 1975-01-01T08:00:00Z1
- 1976-01-01T08:00:00Z1
- 1977-01-01T08:00:00Z1
- 1978-01-01T08:00:00Z1
- 1987-01-01T08:00:00Z1
- 1988-01-01T08:00:00Z1
- 1989-01-01T08:00:00Z1
- 1989-03-01T08:00:00Z1
- 1990-01-01T08:00:00Z1
- 1991-01-01T08:00:00Z1
- 1992-01-01T08:00:00Z1
- 1993-01-01T08:00:00Z1
- 1994-01-01T08:00:00Z1
- 1995-01-01T08:00:00Z1
- 1996-01-01T08:00:00Z1
- 1996-06-01T07:00:00Z1
- 1997-01-01T08:00:00Z1
- 1997-06-01T07:00:00Z1
- 1998-01-01T08:00:00Z1
- 1998-06-01T07:00:00Z2