1992

0.0

1973

7.2

1974

5.3

2007

3.8

1987

4.0

1977

4.3

1975

0.0

1989

5.0

2008

0.0

1979

6.6

1981

4.8

1976

6.4

1973

5.0

1986

5.8

2013

3.0

1985

5.7