1982

7.6

2018

7.7

2007

8.2

5.0

1953

8.0

1992

6.9

1973

7.0

1956

7.6

1954

8.5

1989

7.1

2009

6.0

1960

8.2

1988

6.7

1957

8.3

1970

6.3

2004

7.2

1969

7.1

1993

7.2

1974

7.0

1952

7.8