1997

6.2

2019

7.5

2007

7.6

2010

5.9

2010

0.0

1990

7.4

2017

7.4

2011

7.4

2011

8.2

2015

7.8

2004

4.0

2016

4.4

2005

8.6

2018

5.6

2006

7.3

2020

5.5

2002

7.3