1928

6.9

1931

8.3

1965

7.5

2002

7.6

1976

5.1

2016

6.2

2014

4.7

0.0

2015

6.5

1946

5.0

2007

5.7

2012

2.7

1988

7.4

1995

6.8

2008

6.7

1966

4.5

1973

4.8

2006

7.6

1919

4.7

1984

6.7