1961

7.3

1989

6.4

2006

7.8

2017

3.7

1938

1.0

2006

6.4

1970

6.5

2005

6.8

1996

6.3

2002

6.7

2003

6.3

1997

6.9

2008

6.9

1936

0.0

1999

7.6

1993

6.8

2021

3.5

1943

5.7

1935

4.3

2012

6.0