1995

7.3

1932

6.4

2007

6.9

1977

7.4

2006

5.1

2002

6.1

2017

4.9

2001

6.8

2001

6.9

2000

7.2

1991

6.0

1995

7.3

2003

6.6

2002

6.9

1950

6.8

1988

5.8

2013

8.2

1987

5.6

1919

6.3

1915

5.9