2013

6.7

1993

6.2

2017

4.9

2006

6.3

2006

7.2

2010

5.2

2012

9.8

2009

5.8

2021

9.5

2015

7.8

2003

8.2

1997

7.4

1997

6.2

2003

6.2

2017

6.9

1977

7.4

2016

5.9

2020

8.4

2019

6.1

2015

6.6