Discipline

1975

1995

2015

Change (%)

AL

39.70

30.55

18.62

−53%

S

18.48

49.06

38.41

+108%

Average of soft disciplines

29.09

39.81

28.52

−2%

EE

30.48

65.70

60.43

+98%

BMB

16.13

35.52

54.20

+236%

Average of hard disciplines

23.31

50.61

57.32

+146%

Average of four disciplines

26.20

45.21

42.92

+64%