Date
- 1973-10-01T07:00:00Z1
- 1974-04-01T07:00:00Z1
- 1974-05-01T07:00:00Z1
- 1974-10-01T07:00:00Z1
- 1975-04-01T07:00:00Z1
- 1975-05-01T07:00:00Z1
- 1975-10-01T07:00:00Z1
- 1976-04-01T08:00:00Z1
- 1976-05-01T07:00:00Z1
- 1976-10-01T07:00:00Z1
- 1977-04-01T08:00:00Z1
- 1977-05-01T07:00:00Z1
- 1977-10-01T07:00:00Z1
- 1978-04-01T08:00:00Z1
- 1978-05-01T07:00:00Z1
- 1978-10-01T07:00:00Z1
- 1979-04-01T08:00:00Z1
- 1979-05-01T07:00:00Z1
- 1979-10-01T07:00:00Z1
- 1980-04-01T08:00:00Z1