2014

5.0

2004

8.0

2010

7.7

1994

4.6

2007

5.6

2002

6.0

2003

5.6

2009

7.3

1955

7.1

2012

6.4

1989

5.1

2008

6.8

2009

8.0

1999

6.8

2002

5.9

1993

7.1

2003

7.2

2007

7.3

2005

7.8

1993

6.5