1992

0.0

1980

0.0

1984

6.0

1983

6.5

2005

6.7

1955

7.1

2002

6.7

1929

6.5

2005

7.0

1998

6.9

1950

8.0

1996

6.6

1999

8.4

1972

7.1

2003

7.8