1985

6.7

1980

6.8

2002

7.9

1984

8.1

1969

7.0

1958

6.7

1974

7.5

1993

0.0

1973

6.9

2012

4.0

1960

5.0

1972

8.6

1994

6.3

2013

6.8

1999

7.0

2009

7.3

1987

0.0

2024

8.0

1950

0.0

1997

6.5