1981

5.2

1996

6.5

1984

0.0

1992

5.6

1984

6.9

1965

1.0

2002

5.2

1995

0.0

2012

4.7

1994

7.0

2000

0.0

1980

1.0

2008

6.6

1997

0.0

1995

7.0

2013

3.8

1970

6.2

2001

4.3

1978

5.5

2004

6.1

2011

0.0