1995

6.2

1985

7.5

1975

7.5

1993

0.0

2005

0.0

1997

6.5

1999

7.0

1972

8.6

1959

7.0

2020

7.2

2002

8.0

1995

0.0

1985

6.7

1980

6.8

1984

8.1

1969

7.0

1958

6.7

1974

7.6

1973

6.9

1989

8.2