1993

6.7

2003

6.6

1994

7.1

1941

8.0

2006

5.8

2009

5.5

2019

7.7

1998

7.2

2007

7.5

2001

7.4

1984

7.5

1940

7.4

1979

8.3

2002

7.6

2004

7.8

1960

7.5

1992

7.0

2006

7.4

1976

7.6

1931

7.1