1987

6.5

1971

6.4

1988

6.3

1994

5.8

1996

5.7

2016

7.4

1985

5.2

1986

6.2

1975

6.2

1988

7.1

1989

7.6

2004

6.3

2004

6.4

1986

6.6

1992

5.3

2002

5.8

2007

5.4

1987

6.5

2001

5.8

1991

5.5