2009

7.7

2013

6.6

2006

7.3

2019

8.5

2019

10.0

1967

7.4

2017

8.0

1979

7.5

2008

8.2

2006

6.9

2011

8.4

2002

7.8

2018

7.3

2009

7.4

2016

7.6

2011

7.3

2010

6.2

1986

7.5