2004

6.3

1978

5.0

1979

5.0

2009

3.7

2006

5.5

1981

6.0

2007

6.5

1977

4.6

1991

6.5

1996

4.5

1977

1.0

1986

0.0

2015

5.6

2002

5.5

2004

7.2

1973

5.1

2005

6.7

1972

0.0

1979

0.0

1996

0.0

2004

7.3

2010

4.3

1992

3.0

1973

4.0