2013

5.0

1968

4.7

2009

7.5

2012

5.9

2011

6.3

2005

6.9

2018

5.9

2019

7.0

1979

5.4

2017

6.2

2017

6.6

2010

7.1

2003

5.2

2007

8.1

1965

7.6

2009

4.1

2018

6.9

2016

7.3

1992

6.3

2000

7.3