1971

6.6

1969

6.5

1972

6.7

1971

6.3

2001

5.5

1970

7.2

1972

6.0

1986

5.4

1993

5.1

1971

6.7

1999

0.0

2017

6.2

1970

5.8

1971

6.7

1970

5.3

1989

5.4

1972

6.4

1972

6.2

1965

6.8

1975

6.1