1992

3.8

1991

7.0

2017

4.0

1997

6.0

1996

6.0

2015

6.3

2016

6.5

2019

2.7

1985

0.0

2003

7.8

2008

2.4

2009

3.1

2011

6.1

1992

0.0

1991

8.0

2011

0.0

2007

0.0

2018

6.0