1999

6.6

1985

6.6

1985

6.9

1983

2.0

1993

6.8

1989

7.2

1987

8.3

1989

7.2

1993

7.1

1992

5.1

1991

5.9

1990

4.5

2000

6.4

1999

6.3

2001

6.2

2004

3.7

2003

5.4

1999

6.6

1996

5.8

1992

5.8