1994

8.0

1995

4.0

2001

7.6

2010

8.4

2014

8.5

1998

5.7

2000

8.2

1991

6.2

1984

7.5

1996

5.4

1992

4.8

1995

7.8

1996

5.9

1996

5.7

1990

0.0

2012

7.8

1995

6.4

2006

8.2

1996

5.4

1988

8.7

1980

6.4

1997

5.2