1985

6.7

2011

5.1

2013

5.6

1976

5.9

1933

6.9

2013

7.6

2014

6.5

2021

6.2

2010

7.0

2012

7.2

2020

5.8

2022

5.5

2016

6.8

1999

6.7

2007

5.7

1984

7.1

2005

5.9

1967

5.3

2025

6.4

1898

7.2