2012

8.0

2020

5.4

2013

6.1

2010

7.2

1973

7.2

2002

8.3

2000

6.9

1957

7.6

2004

9.9

2007

7.7

1974

7.0

2008

5.3

1993

6.3

2005

5.7

2008

6.1

2016

4.0

2007

6.8

1987

7.1

1975

6.4