2014

5.8

2019

6.3

2002

2.0

1997

6.7

1998

7.1

2015

6.9

2011

5.0

2016

5.9

2024

7.3

2015

8.1

2012

5.7

2008

6.2

2005

6.1

2022

7.0

2001

6.6

2013

6.1

1994

6.0

1961

0.0