1970

7.5

2007

6.2

2008

5.7

1994

7.9

1952

7.9

2001

6.5

1995

6.9

1984

8.0

1982

6.0

1941

6.5

1997

5.5

1993

6.6

1991

7.7

2007

6.9

1971

6.2

1970

6.3

1962

2.5

2005

6.5

2017

6.7

2022

5.9