1978

6.1

2005

5.0

2002

4.8

2004

5.2

2008

5.6

2024

5.9

2024

6.0

2003

6.0

1991

7.4

2013

6.2

2014

6.0

1966

7.7

2006

6.8

1982

6.1

1967

6.9

1968

5.4

1970

3.8

1930

7.3

1933

3.6

2006

4.5