2012

6.8

2016

6.8

2016

7.9

1999

8.0

2002

7.5

1974

7.9

2009

7.2

1998

7.8

2006

7.0

2015

6.2

1965

7.5

2015

5.8

1974

6.5

2015

7.6

1978

6.8

1959

7.3

2017

7.7

1954

7.9

1958

7.1

2013

5.9