1971

5.7

2022

5.5

2009

7.4

2010

7.5

2018

6.7

2000

7.2

2001

5.2

2018

5.4

2003

6.7

2018

6.4

2018

7.2

2011

6.9

2008

6.5

2005

5.2

2004

4.2

1990

6.1

2017

10.0

2020

7.1

5.6