1985

8.5

2016

6.4

1979

5.0

1980

7.5

2007

7.3

2004

5.8

1989

5.6

1981

0.0

2005

7.8

1977

7.0

1988

5.7

1986

0.0

1981

7.9

1987

5.2

1987

0.0

1982

3.0