2016

5.8

2017

5.9

2021

7.1

2016

6.4

1999

7.4

1955

6.3

2015

7.0

2017

7.0

2007

5.7

2012

9.7

2013

7.3

1988

6.2

1992

5.6

2017

7.4

2003

5.7

2011

5.6

2008

6.5

1990

6.1

2010

7.0

2005

5.8