1985

6.3

1997

6.5

1984

5.6

1987

0.0

1994

6.0

1990

7.4

1984

7.4

1984

7.5

1986

4.0

1979

5.8

2011

5.9

2012

0.0

2015

5.3

2014

5.4

1996

4.8

1986

0.0

1991

6.5

1995

7.6

1992

0.0

1987

4.5

1998

4.0