1964

6.6

1952

3.2

1995

7.0

1894

5.2

1888

6.4

2005

5.4

2004

7.2

2003

5.8

2003

6.2

2006

5.8

1998

6.9

1997

6.8

1996

7.1

2008

5.5

1997

6.5

1999

6.3

1972

4.7

1980

4.7

2008

0.0

2006

7.2