1997

6.3

2016

6.7

2022

7.8

2023

8.0

2012

6.0

2015

8.4

2011

5.6

2017

7.4

1980

5.9

2017

6.1

1990

4.7

1937

5.5

1896

5.2

2009

6.1

2019

8.3

2021

4.5

2006

6.7

2015

6.5

1989

7.1