1989

5.7

1998

7.3

1998

0.0

1995

4.5

1997

0.0

1986

7.1

1991

6.5

2003

7.8

1997

0.0

1999

5.1

2002

5.2

1990

6.3

1988

6.1

1996

6.7

2000

6.2