2003

7.6

2006

6.4

1991

5.9

2007

5.3

1990

5.9

1985

6.0

1954

7.0

1989

6.2

2009

7.0

1930

5.4

1985

6.5

1959

4.4

1940

6.9

1969

6.3

1949

7.2

1961

7.0

1959

8.0

2018

6.7

1982

7.3

1957

5.0