1993

6.2

2011

7.3

2025

6.0

1953

7.1

1977

8.0

1974

5.7

1963

7.3

1973

7.4

1960

7.2

2021

9.2

1951

7.5

1965

7.5

1990

6.4

1986

7.6

2006

5.5

1990

6.7

1998

7.0

1970

5.7

1986

6.7

2005

5.9