1992

6.3

2016

5.3

1997

7.4

1971

8.2

1986

7.5

1940

7.9

1983

7.2

1986

7.9

1972

8.7

1974

8.6

2005

6.7

1958

6.0

1986

7.1

1999

6.4

1975

1.0

2024

6.0

1978

7.2

1982

6.9

1969

7.6

1988

6.1