1947

6.3

2008

6.5

2004

6.6

1997

5.6

1949

5.7

2005

5.2

2016

7.7

2003

7.2

2005

6.9

1952

5.8

1925

5.5

2014

0.0

1928

6.0

2012

6.6

1947

6.7

1965

6.1

1951

6.4

1950

6.9

1941

7.0

2013

10.0