By the end of S4

2013

2014

2015

2016

5@5+

49

54

51

By the end of S5

1@6+

65

60

62

62

3@6+

47

37

43

43

5@6+

22

19

24

23

By the end of S6

1@6+

69

73

66

70

3@6+

57

55

51

51

5@6+

47

45

34

42

1@7+

30

31

25

27