1983

7.7

1997

5.0

1985

0.0

1986

1.0

1994

1.0

2016

3.4

1987

5.0

1996

6.5

2016

4.0

1994

4.8

1970

6.1

1993

0.0

2015

6.2

2004

6.4

1982

5.9

1996

5.6