2020

4.1

1999

7.0

2011

7.0

1988

6.0

1996

6.8

2010

6.6

2011

5.3

1994

6.6

2010

6.3

2007

5.7

2012

6.9

2016

7.3

1982

6.7

2008

7.8

2011

6.3

2010

6.3

2006

6.2

2003

4.9

2013

7.2

2014

6.2