1998

4.7

1994

7.2

1995

7.2

2012

6.9

1994

7.8

1989

6.7

2008

5.9

1986

6.2

2007

8.0

1995

7.3

1999

7.5

1986

7.1

1997

0.0

1988

0.0

1990

0.0

2001

6.6

2005

0.0

1992

6.7

1990

7.9

1994

6.1