1989

0.0

1992

6.6

1983

5.5

2000

6.6

2008

7.3

2004

7.3

1990

6.4

1999

6.0

1996

5.5

1990

6.0

2002

6.2

1993

6.5

1991

6.2

1988

6.2

1993

4.5

1984

6.1

1994

5.2

1996

5.4

1985

5.4

2017

6.2