2001

6.1

2010

5.8

1966

7.5

2003

7.3

1969

7.6

1985

6.1

1964

8.1

2006

6.2

1986

6.8

1999

7.5

1927

8.1

2005

6.3

1994

6.5

2002

6.0

1997

6.9

1983

7.0

2004

7.4

2001

6.1

1980

7.3

1962

7.6