2023

7.1

2014

7.0

2018

6.9

2001

6.5

2011

6.2

2003

6.6

1972

7.7

2020

6.1

2016

6.9

2009

6.6

6.0

2003

5.2

1972

4.5

2012

6.3

2020

6.0

1997

4.0

2017

7.5

2010

6.3

2007

6.9