1997

6.8

2016

5.6

2016

7.4

1994

5.7

2008

7.8

2010

2.4

1985

5.9

2015

6.1

2020

6.8

2023

5.0

2021

7.5

2013

8.1

1922

5.6

2022

7.3

2024

6.0

2001

6.2

2003

6.9

2013

5.6

2017

6.9