2007

7.3

1955

5.6

1985

6.2

1967

7.3

2016

5.9

1928

7.8

1987

7.5

1972

6.9

2010

4.7

2020

6.3

1963

6.6

2003

6.3

2020

6.8

1921

7.2

2001

8.9

1955

7.2

1965

7.7

1950

7.6

2011

7.0