1995

10.0

2012

6.6

2013

0.0

1994

6.6

1997

7.5

1984

7.1

2007

6.6

2004

5.9

2002

5.8

2005

6.6

2001

5.3

1990

7.5

2004

7.2

2017

6.9

2009

6.9

2007

6.4

1977

7.0

2007

7.2

2005

0.0

2006

7.8