2017

6.6

2016

5.5

2014

6.5

2022

4.5

2020

7.2

2002

4.7

2021

6.3

1986

5.7

2021

7.8

1924

7.2

2023

5.8

2003

5.8

2021

9.2

1992

6.7

2018

6.1

2007

7.7

1997

7.0

2009

2.7

2013

8.0

2012

7.5