2009

6.7

1993

5.5

2005

7.2

1989

5.9

5.2

2014

6.6

5.6

1998

6.7

1932

5.1

2009

7.0

1936

4.8

1976

0.0

1973

10.0

1974

5.0

1963

5.0

2009

4.2

2010

3.0