1996

5.8

2001

7.2

1998

6.9

1993

7.1

1990

5.7

1982

6.8

1990

5.5

1999

7.5

1986

7.1

1987

7.7

1995

7.3

1984

7.3

1986

5.8

1987

5.0

2000

5.0

1987

6.8

1986

0.0

1990

7.5

1989

8.3

2011

8.2

1985

5.4

1979

7.0

2000

5.2

1997

7.7

1999

8.3