1998

7.0

1992

6.9

1995

6.2

1997

7.2

1989

6.7

1994

6.7

1994

5.0

1998

3.8

1994

7.8

1999

7.0

1996

5.3

2002

0.0

1995

1.0

1993

4.6

2001

7.1

1997

6.7

1992

5.5

1996

6.6

1997

7.7

2001

6.3

2003

6.5

2001

6.6

2003

6.5

1999

5.5

1996

6.7

1994

6.8

1997

6.3

1995

5.3

1994

7.2

1996

6.8