Year

Mean Method

Median Method

Jackknife Method

1

−0.37

−0.20

−0.38

2

0.24

0.41

0.25

3

−0.29

−0.13

−0.30

4

−0.26

−0.09

−0.27

5

−0.29

−0.13

−0.30

6

−0.58

−0.41

−0.60

7

−0.54

−0.38

−0.56

8

−0.38

−0.22

−0.39

9

−0.50

−0.33

−0.52

10

−0.21

−0.04

−0.22

11

0.38

0.55

−0.39

12

0.16

0.33

0.17

13

1.01

1.18

1.04

14

−0.25

−0.08

−0.26

15

−0.11

0.05

−0.11

16

0.19

0.36

0.2

17

0.16

0.33

0.17

18

0.32

0.48

0.33

19

0.55

0.72

0.57

20

0.67

0.84

0.69

21

0.74

0.91

0.77

22

−0.4

−0.23

−0.41

23

0.67

0.84

0.69

24

0.45

0.62

0.47

25

1

1.17

1.03

26

−0.54

−0.38

−0.56

27

−0.7

−0.53

−0.72

28

−0.58

−0.41

−0.6

29

−0.41

−0.24

−0.42

30

−0.12

0.05

−0.12