1974

5.5

1971

6.1

1955

7.9

2016

6.9

2025

6.5

2004

6.3

2011

3.0

1985

6.9

1969

1.0

2006

7.0

1999

7.0

1999

7.0

1982

6.5

2007

6.3

2008

5.8

1991

6.2

2006

6.3

1966

6.5

1968

5.1

2007

6.0