2020

8.4

2013

8.1

2009

8.8

1984

6.0

2014

6.6

1972

6.5

2007

9.7

2009

7.6

2016

7.5

2008

7.4

2016

10.0

2018

6.3

2015

7.8

2014

6.8

2003

8.7

2014

7.8

2013

6.0

2017

8.0

2023

5.0

1996

5.1