1991

0.0

1988

2.0

2016

4.6

1983

5.7

2013

6.8

2004

7.9

1974

6.0

2015

0.0

1984

5.1

1979

5.0

2004

6.4

1982

0.0

1982

1.0

1999

5.0

1969

0.0

1993

5.9

1991

0.0

2003

7.1

2000

7.4

1992

4.0