1969

7.6

1990

7.8

1939

7.6

1967

6.6

1954

6.7

2006

6.0

2004

6.9

2003

7.2

1959

6.1

1972

6.1

2003

6.1

2007

7.2

1966

6.3

1953

6.6

1927

5.9

2018

4.9

1995

4.3

1965

6.3

1946

7.4

1948

7.4