Year

1990

1991

1992

1993

1994

1995

1996

1997

1998

Jan

6.42

12.35

15.57

7.62

4.03

4.73

3.5

5.38

18.86

Feb

7.51

4.88

9.65

2.8

1.31

1.81

1.49

5.99

4.82

Mar

10.63

4.29

3.38

4.7

2.44

13.49

2.29

2.43

4.62

Apr

3.67

15.27

5.27

10.93

5.22

6.02

2.86

6.96

2.31

May

3.24

19.15

3.67

3.66

3.79

8.96

1.69

8.33

Jun

4.89

3.99

8.49

8.13

4.96

2.8

4.81

10.63

2.69

Jul

4.51

5.47

10.81

7.67

10.69

4.74

5.8

7.9

4.54

Aug

5.25

3.75

11.82

2.46

1.69

4.61

8.56

2.35

3.69

Sept

2

9.51

2.22

3.15

6.23

2.89

3.26

1.51

15.75

Oct

2.84

4.23

2.04

5.45

2.69

6.32

11.35

2.68

3.29

Nov

4.21

2.12

11.67

3.12

1.92

7.42

3.49

5.67

2.46

Dec

5.62

1.15

4.91

3.74

3.06

3.44

6.36

3.45

2.05

Annual

60.79

86.16

89.5

63.43

48.03

67.23

55.46

63.28

65.08