2017

5.9

2006

6.1

2011

5.7

5.4

2012

6.4

1989

5.9

2014

4.8

2015

5.1

2010

7.9

2009

8.0

2012

7.2

2018

7.8

2007

5.7

2021

5.7

2024

8.3

2002

7.1