1991

6.8

1976

7.3

1969

6.4

2007

0.0

1896

7.1

1980

4.7

1960

5.2

2005

6.8

2011

0.0

2013

7.5

1998

0.0

1913

0.0

2003

6.2

2006

5.8

1995

6.2

1894

5.2

1893

5.6

1888

6.3

1903

6.3

2006

4.7