2000

6.4

1994

8.3

2007

6.5

1987

6.6

2004

6.2

1984

6.1

1996

6.6

2014

6.3

2006

6.3

1982

6.8

2005

6.2

1997

5.3

1996

6.4

2017

6.0

2006

5.8

1992

5.3

1943

6.5

2005

5.7

2006

6.5

1940

6.5