2019

6.5

2020

6.4

1980

5.9

2016

6.1

2004

6.4

2012

5.3

2011

6.6

2005

5.2

2021

6.7

2021

6.1

1998

6.0

1953

7.2

7.0

2000

5.1

2022

7.3

2020

6.5

2003

6.8

2015

6.3

2010

6.8

2006

6.8