2010

6.6

2020

7.4

2011

7.1

2001

7.2

2016

6.6

2021

7.4

2020

6.9

2012

6.3

2015

6.1

2017

5.9

2006

6.4

1968

6.9

1895

6.7

2023

6.0

1984

7.2

1972

7.3

2023

6.3

2008

6.1

1987

5.7