1996

6.5

2017

7.8

2015

0.0

1997

1.0

1984

6.9

1998

6.8

2012

7.5

1998

3.5

1997

2.0

1994

0.0

2012

6.0

2017

8.3

2001

0.0

1994

7.2

2004

5.9

2007

6.7

2006

3.7

1970

6.2

2009

6.1

1995

1.0

2010

6.5

1996

5.3

2015

5.3