1985

7.4

2006

5.3

1985

4.1

2014

9.0

1988

6.6

2004

5.5

2005

5.1

1996

6.0

1988

7.4

2012

6.4

2016

0.0

1999

7.3

2001

9.0

1998

6.0

1987

4.5

1955

0.0

2012

6.8

2002

6.0

1993

3.5

2011

8.0