2012

6.7

2021

8.5

2015

6.5

2022

8.7

2009

8.5

2019

7.8

2023

9.1

1970

8.7

2000

8.4

1995

6.5

2018

7.1

2008

4.9

2020

8.9

1938

4.0

2017

8.6

2005

8.0

2024

8.5

2014

6.4