1955

7.9

1951

7.7

1938

7.4

1962

8.0

1960

7.5

1987

7.1

1959

7.9

1972

6.2

1955

7.5

1959

8.1

2004

6.3

1983

6.6

1992

6.5

1985

7.2

2016

3.0

1970

6.8

2004

5.8

1992

7.6

1965

6.2

2006

5.5