1996

6.5

1986

6.6

1992

5.3

1985

6.7

1998

5.8

2002

6.7

2007

7.6

1987

6.0

1990

6.0

1997

5.7

2014

3.8

1996

6.1

1996

6.1

1995

6.8

1987

6.6

1994

5.8

1998

5.8

1996

6.6

1997

6.5

1991

6.3