1931

7.2

2003

5.7

1976

6.7

1973

6.9

2006

6.3

2001

7.4

2001

5.5

2002

6.1

2007

6.4

2008

7.5

2006

5.0

1982

6.8

2006

0.0

2008

6.4

1989

5.1

2015

5.4

2007

5.9

2005

5.8

1954

6.8

2004

3.9