2014

5.0

2007

6.5

2003

5.7

1996

6.4

1998

7.0

1997

6.4

1997

7.9

2005

6.1

1995

8.2

2007

7.3

1983

6.3

1995

8.0

1999

6.3

1998

7.8

2008

6.3

2002

6.7

1973

8.0

1966

8.5

2005

6.2

1993

6.5