1997

8.2

2017

6.9

1999

7.9

1986

7.9

1990

7.4

1998

7.8

1998

7.1

2016

8.5

2013

6.3

2014

0.0

2011

7.7

1995

0.0

2012

0.0

2006

0.0

2025

7.6

2020

7.0

2013

6.4

2014

10.0

2012

0.0

1995

7.3