1982

6.8

2009

6.5

1980

6.3

1955

0.0

1965

6.3

2005

6.5

2005

6.2

2024

8.0

1987

7.2

1988

6.7

2003

6.0

2001

6.6

1992

6.3

1989

7.1

1975

6.8

2006

6.4

2003

6.7

1980

5.7

2005

6.2

1996

6.2