1992

6.6

1942

6.0

1944

7.6

2006

6.6

1996

6.2

1995

6.5

1997

6.1

1989

6.3

1984

7.2

2001

6.8

1985

7.5

2002

6.3

2002

5.9

2003

6.8

2005

4.6

1987

7.1

1990

6.8

2005

5.9

2004

7.3

1998

5.0