1896

7.1

1980

4.8

2007

6.8

2007

5.4

2011

5.0

2005

5.4

2004

7.3

2003

5.8

1998

6.8

1997

6.5

1996

7.1

1934

6.3

2002

7.5

1895

4.3

2006

7.2

1998

6.6

1999

5.9

2001

5.8

1998

5.3

1994

5.1