2016

9.2

2005

7.6

2008

7.4

1998

7.3

2007

8.3

1961

7.5

2007

7.9

2007

8.0

1972

7.7

2002

7.9

2002

7.9

2018

7.1

2010

7.5

2020

7.6

2019

8.0

1983

8.0

2004

8.0

1993

8.1

2015

7.6

1999

8.2