2003

5.8

1993

5.5

2014

4.5

2016

4.2

2017

4.8

2019

7.0

2018

6.2

1970

6.1

2009

6.6

2012

5.9

2024

5.5

2008

7.8

2011

5.5

1977

6.5

1956

6.4

2007

7.0

2003

6.9

2015

7.7

2018

6.5

2007

4.7