2008

8.0

2009

7.7

2018

6.0

2015

8.1

1943

8.5

1970

6.3

2010

4.3

2007

7.7

2006

6.4

5.6

1969

5.2

2016

5.9

6.3

2017

7.9

2022

5.7

2023

5.6

1999

7.2

1991

6.9

1984

10.0

2013

6.4