1993

6.5

2008

5.8

2003

6.8

2001

7.2

2012

7.0

2017

6.6

2010

6.6

2014

6.9

1953

7.2

2023

6.1

2005

5.2

2003

6.8

2012

5.8

2011

6.6

2011

6.8

2022

5.6

1975

6.4

2023

6.0

1964

7.4

2013

6.2