1921

0.0

1965

2.4

1946

6.6

1941

5.5

1935

5.9

2009

4.4

2010

6.3

2017

6.3

2002

6.7

2007

6.4

2007

6.7

1992

4.1

1996

5.6

1937

5.5

1999

5.7

1980

7.9

1948

7.9

2004

6.6

2005

6.7

1996

7.0