1982

6.9

1963

6.9

2017

10.0

1931

5.8

2002

6.0

2014

6.6

2000

6.7

2009

7.4

2009

5.6

1989

9.6

2008

5.4

1994

6.5

1986

5.6

1999

5.1

1976

7.5

2007

7.4

2007

6.2

1940

7.5

1987

7.3

2000

5.1