1999

5.0

1937

7.9

1996

7.3

1993

6.7

1963

7.7

1993

6.3

2005

6.0

2005

6.7

1999

7.2

2006

7.1

2007

7.3

2006

6.8

1985

6.7

1985

7.1

1990

5.8

2006

6.7

1936

6.5

2004

6.7

1991

7.4

2007

5.4