1992

5.8

1990

7.3

1992

6.9

1992

6.2

1992

4.6

1989

7.5

1990

7.6

1991

5.7

1992

6.3

1991

5.8

1989

5.9

1990

6.5

1988

7.3

1987

6.2

1992

6.1

1990

6.8

1992

6.0

1987

7.2

1993

5.8

1986

5.3

1987

6.7

1989

6.1

2008

4.3

1996

6.9

2002

6.8

2003

4.8

1993

4.8

1993

2.0

1989

7.1

1990

6.3

1994

5.5

1984

6.0

1990

6.6

1987

6.3

1993

6.7

1989

0.0

1989

6.2

2002

5.6

1992

4.0

1989

7.0

1988

5.6

1992

6.5

1990

5.8

1992

1.8

1988

4.6

1992

8.1

1989

7.2

1994

4.5

1990

6.0

1988

6.2

1987

6.5

2001

6.9