2000

6.7

2009

6.2

2013

6.3

1896

5.2

2010

7.1

2014

5.9

1997

6.5

1995

7.8

2004

4.7

2006

5.8

2009

7.3

2011

4.9

1994

6.8

2010

5.8

1986

7.6

1998

5.4

2009

4.9

1973

6.3

1923

8.5

2005

6.4