2009

6.2

2014

6.5

6.1

1990

6.6

2012

6.3

2006

6.8

2021

7.1

2010

7.4

2020

5.2

2020

6.7

2005

7.0

2021

6.7

1995

5.4

1999

6.4

2025

6.3

2020

6.3

2016

5.7

2011

5.9