2018

9.6

1998

7.1

1981

7.6

2011

7.4

2001

7.8

2018

8.1

2015

5.3

1999

7.5

2013

8.0

2015

6.8

2014

7.7

2006

8.6

2016

7.3

2009

7.9

2003

7.8

2009

7.5

1993

6.6

2010

7.7

2016

7.3

2013

7.5