1972

6.3

1969

6.1

2004

6.3

2016

6.0

1995

7.6

2016

3.5

2001

7.3

1941

6.2

1994

6.8

2004

7.5

1951

6.9

2014

8.0

1966

7.9

1962

6.5

1996

6.0

1985

6.7

2005

6.2

2002

6.4

1982

7.4

2007

0.0