2013

5.9

1974

6.4

1993

5.0

2016

6.0

2009

7.5

2005

6.2

2014

8.1

1995

6.3

1999

7.1

1990

6.5

2003

7.2

1989

6.0

2014

3.0

2001

7.5

1979

6.0

2004

6.3

1992

7.4

2006

6.6

2001

6.4

1970

3.9