1979

6.9

1959

7.9

2000

7.1

1957

7.8

2001

7.4

1957

8.3

1931

4.5

2014

5.8

1984

8.0

1981

8.1

2005

6.0

1971

6.9

2023

7.7

1935

6.8

2009

5.4

2014

7.2

1999

6.1

2017

6.7

1995

6.7

2018

6.3