2006

6.7

1994

5.9

1997

3.2

1993

4.5

2014

6.1

2000

5.8

1993

4.2

1991

6.8

1988

5.8

1991

6.7

1992

3.0

1987

7.7

1992

5.8

2003

4.3

1997

5.7

1993

4.8

1995

5.0

2002

7.7

1994

7.7

1995

6.2

2009

7.3

1994

4.9

2000

7.0

1991

6.0

1990

6.8

1993

4.9