2006

7.1

1996

7.0

2002

6.7

2001

6.1

2006

6.0

2006

6.3

1994

5.7

1993

5.0

2016

0.0

1976

6.8

2003

5.1

1992

7.1

1999

6.0

1974

6.0

2002

6.5

2017

3.0

2016

6.3

2008

5.0

2015

4.2

1983

5.8