2017

7.3

1989

6.3

2014

8.5

1971

6.8

2024

6.9

2021

10.0

2012

6.1

2023

7.6

2012

9.1

2014

6.3

2018

10.0

2005

8.3

1990

7.5

2006

5.8

2009

7.4

2004

7.3

2009

6.3

2007

6.7