| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | April 2023 | 1 | |
| Season 1 | March 1973 | June 1973 | 4 |
| Season 2 | April 1974 | August 1974 | 4 |
| Season 3 | September 1974 | 1 | |
| Season 7 | September 1977 | December 1977 | 16 |
| Season 8 | August 1981 | 1 | |
| Season 9 | 0 | ||
| Season 10 | 0 | ||
| Season 11 | January 1983 | 1 | |
| Season 14 | August 1986 | 1 | |
| Season 15 | June 1987 | June 1987 | 2 |
| Season 16 | December 1987 | 1 | |
| Season 17 | September 1988 | April 1989 | 2 |
| Season 18 | October 1989 | 1 | |
| Season 19 | October 1990 | 1 | |
| Season 20 | 0 | ||
| Season 23 | September 1995 | April 1996 | 4 |
| Season 46 | May 2019 | August 2019 | 16 |
| Season 47 | September 2019 | August 2020 | 48 |
| Season 48 | September 2020 | August 2021 | 48 |
| Season 49 | September 2021 | August 2022 | 46 |
| Season 50 | September 2022 | August 2023 | 40 |
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| Specials | 0 | ||
| Unassigned Episodes | 238 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 238 |
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