1988

5.6

2000

5.7

2000

7.5

1993

8.2

1994

6.7

1989

6.8

1971

8.1

1996

6.7

1989

6.0

1991

5.7

2017

7.7

2003

7.2

1998

6.1

1997

6.6

1992

6.0

2003

8.0

1984

7.5

1995

7.3

1995

5.2

1992

6.7

1989

8.3

1992

6.7

2002

6.3

1990

6.9

1995

0.0