1994

7.9

2008

5.7

1995

6.9

2001

6.4

1970

7.5

1952

7.9

2007

6.2

1984

8.0

1982

6.0

1941

6.5

1997

5.5

1970

6.4

1971

6.2

1993

6.6

2007

6.9

1991

7.7

2005

6.5

1962

2.5

2017

6.7

2022

5.9