2013

6.5

2015

4.6

1972

6.5

6.6

2006

6.0

1988

6.2

1953

7.2

2007

7.2

2016

6.7

2014

5.7

1993

6.5

2017

6.0

1994

6.2

1985

6.7

1988

5.7

1995

4.6

1949

6.2

1994

6.6

1965

6.7