1949

8.0

2000

6.4

1959

8.1

2009

8.5

1972

4.0

1958

7.4

2019

6.8

1965

6.3

1928

8.0

2010

6.7

1961

7.8

1937

6.7

1994

8.1

1983

7.5

1989

6.2

1972

6.7

1976

7.2

1978

8.0

1966

6.6

2004

7.3