1988

5.4

2015

4.6

2003

8.7

2007

8.1

2006

5.5

2010

7.3

2004

7.3

1986

6.9

1936

7.1

1992

6.3

2009

7.3

2012

6.1

2013

5.7

2005

6.3

2008

7.0

2009

5.4

1987

5.5

1955

7.2

2010

6.8

1928

6.0