2017

6.7

1987

4.0

2005

7.0

2004

7.9

1984

7.5

1939

7.6

1979

6.9

1959

7.9

2000

7.1

1966

8.0

1957

8.3

1965

7.2

2019

5.8

2007

6.9

1994

0.0

1957

6.0

1928

8.0

2001

7.8

1999

5.7

1957

7.8