1975

7.3

1955

6.4

1943

8.2

1974

7.5

1953

7.7

1950

5.7

1999

6.4

2011

0.0

1965

7.1

2008

6.6

2015

5.5

1920

0.0

2003

7.1

1999

7.5

2013

7.3

2008

5.5

1988

4.9

2025

10.0

1934

5.0

1994

6.7