1974

7.0

2025

6.3

2007

6.8

1972

6.9

1982

5.8

1968

7.4

2011

7.1

1972

7.5

1961

8.0

1976

7.3

1964

8.2

1967

7.5

1983

6.6

2010

5.5

1960

7.1

1964

7.0

2012

7.9

1971

6.0

1968

6.9

2001

6.2