1940

8.1

1956

6.9

1974

4.9

1924

0.0

2002

6.6

1973

4.7

2005

6.2

2004

5.8

1936

7.6

1997

5.6

2001

5.7

2002

6.3

2007

5.4

2006

6.6

2008

7.7

2006

5.7

2014

4.7

1992

5.7

1952

7.6

1975

6.8