1996

6.9

1986

6.3

2005

6.2

1982

7.2

2014

5.1

2006

3.2

2009

6.3

1997

5.4

2007

5.5

1942

7.1

1958

7.5

2003

7.4

1941

5.2

2003

5.3

1937

6.2

1994

7.5

2017

6.5

1988

6.6

1987

7.3

2013

7.6