2006

6.8

1897

4.0

1990

6.0

2013

6.6

2015

6.7

2006

6.7

1994

6.7

1997

7.5

1992

7.8

2016

6.2

2013

0.0

2007

6.6

2012

5.6

2016

7.7

2002

5.8

1936

5.0

1960

6.2

1983

5.4

2018

7.0

2004

7.2