1973

7.4

1992

7.4

1944

7.6

1957

6.8

2013

6.2

1979

5.3

1945

7.4

2007

6.3

1983

5.9

2015

7.6

1991

6.1

1993

6.3

2002

5.6

1997

6.9

2002

5.4

1965

2.0

2001

6.0

2002

6.3

1996

7.4

1936

6.1