1982

5.7

2017

5.1

2017

6.7

2016

8.0

1976

8.1

1995

7.0

1996

7.0

2006

5.6

2013

0.0

2002

6.4

2005

4.8

1989

6.3

1999

6.5

1998

6.1

1991

10.0

1999

5.5

2008

6.3

2007

5.6

1981

7.0

2002

6.4