2005

7.5

2004

6.0

2007

6.0

2001

7.7

1971

5.0

1994

0.0

1956

6.1

2005

6.0

2007

7.1

2017

6.9

2006

5.8

2016

6.3

1994

6.2

1981

6.4

2008

6.8

2001

7.0

1995

6.5

1992

7.1

1974

6.6

2007

6.7