2011

6.0

2006

6.5

2012

7.4

2014

6.9

1982

5.9

1978

7.5

2019

7.4

2004

7.8

1991

8.1

1965

7.4

1961

8.0

1965

8.0

2018

6.9

2004

6.8

1983

7.9

2002

6.7

2017

7.0

2008

8.5

2015

7.3

2011

7.1