2011

6.5

2014

6.6

2016

7.5

2020

7.0

2013

6.8

2021

7.5

2024

6.3

2017

9.0

2015

8.3

2019

5.0

1996

5.0

1911

4.8

1941

4.8

2018

7.0

2016

6.6

2023

4.7

2012

3.5

1973

5.4

1951

6.0

1931

6.0