2005

8.0

2006

8.5

2007

10.0

1985

6.2

2005

5.0

2011

6.2

1934

3.8

1955

5.5

2013

3.3

2008

7.0

2017

5.7

1997

9.3

2000

5.9

8.0

1980

5.0

1928

6.0

2018

4.2

2010

4.5