2003

6.1

2001

5.8

1952

7.6

2019

6.0

2011

6.9

1986

6.5

2008

7.2

2017

6.7

1995

6.1

2012

6.4

2018

6.5

2007

6.7

2008

7.2

1970

6.8

2012

6.5

1968

7.2

2009

5.0

2010

6.6

2022

5.6