1984

7.0

1921

6.8

2008

7.8

2014

5.4

2017

8.2

2003

9.9

2012

5.6

2013

5.8

2009

5.4

2008

5.2

1982

5.7

1968

6.9

2008

5.3

1944

7.1

2003

5.0

2007

6.0

1993

5.8

1992

7.7

2009

5.8

1998

6.1