2019

5.4

1968

4.8

2012

6.0

2020

6.1

2021

9.2

2013

6.9

2007

6.4

5.8

2009

7.1

1984

6.7

6.8

2003

5.7

2012

6.4

2013

6.1

2006

6.9

2009

5.0

2008

7.4

2004

7.9

2021

8.2

1990

5.8