2009

6.3

2024

6.0

2008

6.2

7.0

2013

6.4

2021

6.7

2015

6.6

2002

6.1

2018

6.3

2018

6.5

2020

6.4

1994

4.6

2006

5.0

1972

6.6

2006

6.2

1991

5.9

2013

7.6

2003

5.8

2004

6.1

2011

7.0