1962

6.8

1964

7.0

2006

6.6

1954

7.6

1955

6.0

1933

7.6

2005

6.9

2014

4.2

1940

5.8

1982

5.4

1997

6.5

2001

6.2

1967

5.7

2004

4.1

2015

7.5

2001

4.0

2020

5.0

2005

4.8

1993

7.2

2004

3.2