2011

6.8

2009

5.3

2021

7.8

2001

9.9

2012

5.0

2013

5.9

6.1

1990

5.1

2016

7.1

2018

5.1

1992

6.9

2018

5.6

2015

6.6

1985

6.1

2012

6.4

1980

6.0

2004

6.0

2010

6.0

2011

5.5