Season 1

1972-02-19

Season 2

1973-03-17

Season 3

1974-01-19

Season 4

1975-01-04

Season 5

1976-01-17

Season 6

1977-01-15

Season 7

1978-01-14

Season 8

1979-01-13

Season 9

1980-01-26

Season 10

1981-01-24

Season 11

1982-01-23

Season 12

1983-01-22

Season 13

1984-01-21

Season 14

1985-01-19

Season 15

1986-01-18

Season 16

1987-02-14