2014

6.5

1996

7.0

1958

7.8

1955

7.2

2007

5.3

1939

6.7

2014

6.6

1946

7.2

1977

5.9

1944

6.7

1989

6.2

2015

6.1

1990

6.1

2000

5.0

1991

7.1

1985

7.4

1967

6.9

1969

7.1

1978

5.9

1945

5.5