1979

0.0

1983

6.3

2016

7.1

1988

7.0

2007

5.1

1992

4.4

1971

5.5

1990

7.4

2014

7.0

1984

6.1

1991

3.0

1987

6.0

1984

0.0

1985

7.1

2017

7.6

1999

7.4

1980

0.0

2016

0.0

1995

6.1