1988

7.4

2000

6.7

2016

7.0

2004

6.3

2015

7.0

2019

6.0

1994

7.3

1995

0.0

1991

4.9

1987

4.6

2018

6.1

1997

0.0

2015

7.5

1975

0.0

2008

10.0

1985

5.4

1999

7.3

1983

0.0

2015

5.9

1987

7.3