Every class, from 1 to 56.

54

2023–24

53

2022–23

52

2021–22

51

2020–21

50

2019–20

49

2018–19

48

2017–18

47

2016–17

46

2015–16

45

2014–15

44

2013–14

43

2012–13

42

2011–12

41

2010–11

40

2009–10

39

2008–09

38

2007–08

37

2006–07

36

2005–06

35

2004–05

34

2003–04

33

2002–03

32

2001–02

31

2000–01

30

1999–00

29

1998–99

28

1997–98

27

1996–97

26

1995–96

25

1994–95

24

1993–94

23

1992–93

22

1991–92

21

1990–91

20

1989–90

19

1988–89

18

1987–88

17

1986–87

16

1985–86

15

1984–85

14

1983–84

13

1982–83

12

1981–82

11

1980–81

10

1979–80

9

1978–79

8

1977–78

7

1976–77

6

1975–76

5

1974–75

4

1973–74

3

1972–73

2

1971–72

1

1970–71