2001

6.2

1982

6.7

1989

7.0

1985

0.0

1990

5.4

4.0

1986

6.9

1995

7.9

2007

0.0

1988

0.0

1987

5.6

2005

7.5

1984

7.2

1985

7.1

1987

5.2