2014

6.0

2008

5.6

1990

5.2

2007

7.7

1955

7.5

2007

6.1

2017

6.4

2020

8.4

2012

9.4

2005

9.9

2010

4.2

2013

4.7

2017

5.7

1997

6.2

2021

10.0

2012

6.3

1999

6.2

1973

6.3

2001

6.5

2006

6.4