2009

6.5

1999

6.1

1972

5.3

2017

5.7

1972

6.5

2017

5.2

1998

7.8

2014

6.0

1999

3.0

1996

7.6

2006

6.7

2008

6.4

2007

7.1

1974

7.5

2003

4.1

2008

6.2

1955

5.0

1985

10.0

2005

6.3

1997

6.5